MESON Chess Problem Database
Problem Display
PID: 78727 (8/8/1p1N4/3p4/3k4/1r1N1r2/1P1R1P2/2Q2KB1 w - - 0 1)
Lipton, Michael
The Tablet, 1959
(First published on Sat Nov 21 1959)
#2
8 + 5
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Qxb2#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rbxd3
- 2.Qc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Rxf2+
- 2.Bxf2#
- 1...Rfxd3
- 2.f4#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Rxb2
- Tries
- 1.Ke1?
- 1...Re3+
- 2.fxe3#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rxf2
- 2.Bxf2#
- 1...Rfxd3
- 2.f4#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Ra3!
- 1...Re3+
- 1.Ke2?
- 1...Rxf2+
- 2.Bxf2#
- 1...Re3+
- 2.fxe3#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.f4#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Ra3!
- 1...Rxf2+
- 1.Kg2?
- 1...Rxf2+
- 2.Bxf2#
- 1...Rg3+
- 2.fxg3#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.f4#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Re3
- 2.fxe3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Ra3!
- 1...Rxf2+
- 1.Se1+?
- 1...Rbd3
- 2.Sxf3#
- 2.Qc3#
- 1...Rfd3
- 2.Sf3#
- 2.f4#
- 1...Ke5!
- 1...Rbd3
- 1.Sb4+?
- 1...Rbd3
- 2.Sc6#
- 2.Qc3#
- 1...Rfd3
- 2.Sc6#
- 2.f4#
- 1...Ke5!
- 1...Rbd3
- 1.Sc5+?
- 1...Rbd3
- 2.Qc3#
- 1...Rfd3
- 2.f4#
- 1...Ke5!
- 1...Rbd3
- 1.Se5+?
- 1...Rbd3
- 2.Sxf3#
- 2.Sc6#
- 2.Qc3#
- 1...Rfd3
- 2.Sf3#
- 2.Sc6#
- 2.f4#
- 1...Kxe5!
- 1...Rbd3
- 1.Sf5+?
- 1...Rxf5
- 2.f3#
- 1...Ke4!
- 1...Rxf5
- 1.Rd1?
- 1...Rxf2+
- 2.Bxf2#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.Qe3#
- 2.f4#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Re3
- 2.Qxe3#
- 2.fxe3#
- 1...Rg3
- 2.Qf4#
- 2.fxg3#
- 1...Rh3
- 2.Qf4#
- 2.f3#
- 1...Rf4
- 2.Qe3#
- 2.Qxf4#
- 2.f3#
- 1...Rf5
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Ra3!
- 1...Rxf2+
- 1.Qe1?
- threat
- 2.Qe5#
- 1...Rxf2+
- 2.Bxf2#
- 2.Qxf2#
- 1...Rfxd3
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...Re3
- 2.Qxe3#
- 2.fxe3#
- 1...Rf5
- 2.Qe3#
- 2.f3#
- 2.f4#
- 1...Rbxd3!
- threat
- 1.Qc2?
- 1...Rxf2+
- 2.Bxf2#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.f4#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...Ra3!
- 1...Rxf2+
- 1.Qc6?
- 1...Rxf2+
- 2.Bxf2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.f4#
- 1...Ra3
- 2.Qxb6#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qc5#
- 2.Qb6#
- 1...Rxb2!
- 1...Rxf2+
- 1.Qc7?
- 1...Rxf2+
- 2.Bxf2#
- 1...Rbxd3
- 2.Qc3#
- 1...Rfxd3
- 2.f4#
- 1...Ra3
- 2.Qxb6#
- 1...Rc3
- 2.Qxc3#
- 2.bxc3#
- 1...Rb4
- 2.Qc3#
- 1...Rb5
- 2.Qc3#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.Qg7#
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qb6#
- 2.Qc5#
- 2.Qa7#
- 1...Rxb2!
- 1...Rxf2+
- 1.Ke1?
- Keys
- 1.Qa1!
- 1...Rxf2+
- 2.Bxf2#
- 1...Rxb2
- 2.Qxb2#
- 1...Rbxd3
- 2.b4#
- 1...Rfxd3
- 2.f4#
- 1...Ra3
- 2.bxa3#
- 1...Rc3
- 2.bxc3#
- 1...Rb4
- 2.b3#
- 1...Rb5
- 2.b3#
- 2.b4#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.f3#
- 1...Rf5
- 2.f3#
- 2.f4#
- 1...Rf6
- 2.f3#
- 2.f4#
- 1...Rf7
- 2.f3#
- 2.f4#
- 1...Rf8
- 2.f3#
- 2.f4#
- 1...b5
- 2.Qa7#
- 1...Rxf2+
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(a);OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(a);N_GUARD::QAB1(A)
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(b);N_PINP(F),P_SPINR(b),XS(G)::B(C)+P(F)
- R(b);N_PINP(F)::P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F)
- R(b);::B(C)+P(F)
- P(e);N_GUARD::QAB1(A)
- Tries
- Try
- K(B);N_SPINP(F),P-FLIGHT
- Vars
- R(b);CHECK,OGATE::P(F),XR(b)
- R(a);OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(b);OGATE,P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB1(A)
- R(b);OGATE::B(C)+P(F),XR(b)
- R(b);OGATE::B(C)+P(F)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(a);
- Try
- K(B);N_SPINP(F),S_FLIGHT
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(b);CHECK,OGATE::P(F),XR(b)
- R(a);OGATE,P_PINR(E),XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);OGATE,P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB1(A)
- R(b);OGATE::B(C)+P(F),XR(b)
- R(b);OGATE::B(C)+P(F)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(a);
- Try
- K(B);N_SPINP(F),S_FLIGHT
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(b);CHECK,OGATE::B(C)+P(F),XR(b)
- R(a);OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);OGATE,P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB1(A)
- R(b);OGATE::P(F),XR(b)
- R(b);OGATE::B(C)+P(F)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(a);
- Try
- S(G);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- S(G);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- S(G);CHECK
- Vars
- R(a);P_SPINR(a)::QAB1(A)
- R(b);N_PINP(F),P_SPINR(b)::B(C)+P(F)
- Refutation
- K(c);S_FLIGHT
- Try
- S(G);CHECK
- Refutation
- K(c);S_FLIGHT,XS(G)
- Try
- S(H);CHECK
- Vars
- R(b);XS(H)::B(C)+P(F)
- Refutation
- K(c);P-FLIGHT
- Try
- R(E);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(a);OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(a);N_GUARD::QAB1(A)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- QAB1(A)
- Refutation
- R(a);P_SPINR(a),XS(G)
- Try
- Q(A);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(a);OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);N_PINP(F),P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB1(A)
- R(b);N_PINP(F)::P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F)
- R(b);::B(C)+P(F)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(a);
- Try
- Q(A);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);N_PINP(F),P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB(A),XP(e)
- R(a);N_GUARD::QAB1(A)
- R(b);N_PINP(F)::P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F)
- R(b);::B(C)+P(F)
- Refutation
- R(a);XP(D)
- Try
- Q(A);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAB1(A)
- R(b);N_PINP(F),P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);N_GUARD::QAB(A),XP(e)
- R(a);N_GUARD::QAB1(A)
- R(b);N_PINP(F)::P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F),XR(b)
- R(b);::B(C)+P(F)
- Refutation
- R(a);XP(D)
- Try
- Actual
- Q(A);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(F)::B(C),XR(b)
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
- R(a);OGATE,P_SPINR(a),XS(G)::QAB(A)+P(D)
- R(b);N_PINP(F),P_SPINR(b),XS(G)::B(C)+P(F)
- R(a);OGATE::QAB(A)+P(D),XR(a)
- R(a);OGATE::P(D),XR(a)
- R(a);OGATE::QAB(A)+P(D)
- R(b);N_PINP(F)::P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F),XR(b)
- R(b);N_PINP(F)::B(C)+P(F)
- R(b);::B(C)+P(F)
- P(e);OGATEB::QAB(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).