MESON Chess Problem Database
Problem Display
PID: 10275 (b6q/3Q1P2/N2pP3/1P1k4/Kp4R1/n1p5/2P1R1N1/1r5B w - - 0 1)
Mansfield, Comins
Comm., L'Italia Scacchistica, 1963
#2
11 + 8
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Se3#
- 1...Qg7
- 2.Se1#
- 1...Qb8
- 2.Se1#
- 1...Qc8
- 2.Se1#
- 1...Qd8
- 2.Se1#
- 1...Qe8
- 2.Se1#
- 1...Qf8
- 2.Se1#
- 1...Qg8
- 2.Se1#
- 1...Rb2
- 2.Sh4#
- 1...Rb3
- 2.Sh4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sxb5
- 2.Qxb5#
- 1...Qe5
- Tries
- 1.Sf4+?
- 1...Kd4
- 2.Sd5#
- 1...Kc4!
- 1...Kd4
- 1.Sxb4+?
- 1...Kc5
- 2.Qa7#
- 1...Rxb4+!
- 1...Kc5
- 1.Re5+?
- 1...Qxe5
- 2.Se3#
- 1...Kxe5!
- 1...Qxe5
- 1.Qa7?
- threat
- 2.Sc7#
- 1...Qd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Qb8
- 2.Se1#
- 2.Rd4#
- 2.Qd4#
- 1...Qc8
- 2.Se1#
- 2.Rd4#
- 2.Qd4#
- 1...Qd8
- 2.Se1#
- 2.Rd4#
- 2.Qd4#
- 1...Sxb5!
- threat
- 1.e7?
- threat
- 2.Qe6#
- 1...Sxb5
- 2.Qxb5#
- 1...Qh6
- 2.Qf5#
- 1...Qe5
- 2.Se3#
- 1...Qc8
- 2.Se1#
- 1...Qf6!
- threat
- 1.Sf4+?
- Keys
- 1.Qc8!
- 1...Qxh1
- 2.Qxa8#
- 1...Qxc8
- 2.Se1#
- 1...Rxh1
- 2.Sxb4#
- 1...Sxc2
- 2.Qc4#
- 1...Sxb5
- 2.Qc4#
- 1...Qh6
- 2.Qxa8#
- 1...Qd4
- 2.Sf4#
- 1...Qe5
- 2.Se3#
- 1...Qf6
- 2.Qxa8#
- 1...Qg7
- 2.Se1#
- 2.Qxa8#
- 1...Qh2
- 2.Qxa8#
- 1...Qh3
- 2.Qxa8#
- 1...Qh4
- 2.Qxa8#
- 1...Qh5
- 2.Qxa8#
- 1...Qh7
- 2.Qxa8#
- 1...Qd8
- 2.Se1#
- 1...Qe8
- 2.Se1#
- 1...Qf8
- 2.Se1#
- 1...Qg8
- 2.Se1#
- 1...Ra1
- 2.Sxb4#
- 1...Rc1
- 2.Sxb4#
- 1...Rd1
- 2.Sxb4#
- 1...Re1
- 2.Sxb4#
- 1...Rf1
- 2.Sxb4#
- 1...Rg1
- 2.Sxb4#
- 1...Rb2
- 2.Sh4#
- 1...Rb3
- 2.Sh4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sc4
- 2.Qxc4#
- 1...b3
- 2.Sb4#
- 1...Qxh1
- 1.Qc8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 19
- REMOVED MATES = 2
- Sets
- Q(h);SBLOCK::B(A)+S(D),DCHECK
- Q(h);N_GUARD::B(A)+S(D)
- R(a);N_GUARD::B(A)+S(D)
- B(g);N_GUARD,P_PINP(G)::QAB1(J),XB(g)
- B(g);N_GUARD::QAB(J),XB(g)
- S(b);OGATE,XP(G)::QAR2(J),XS(b)
- Tries
- Try
- S(D);CHECK
- Vars
- K(e);P-FLIGHT::R(F)+S(D)
- Refutation
- K(e);N_SPINP(f),S_FLIGHT
- Try
- S(H);CHECK,XP(d)
- Vars
- K(e);N_SPINP(f),P-FLIGHT::QAB(J)
- Refutation
- R(a);CHECK,XS(H)
- Try
- R(C);CHECK
- Vars
- Q(h);SBLOCK,XR(C)::B(A)+S(D),DCHECK
- Refutation
- K(e);N_SPINP(f),P-FLIGHT,XR(C)
- Try
- Q(J);N_PINP(f)
- Threat
- S(H)
- Refutation
- S(b);XP(G)
- Try
- P(I);
- Threat
- QAB1(J)
- Vars
- S(b);OGATE,XP(G)::QAR2(J),XS(b)
- Q(h);N_GUARD::QAR2(J)
- Q(h);SBLOCK::B(A)+S(D),DCHECK
- Q(h);N_GUARD::B(A)+S(D)
- Refutation
- Q(h);
- Try
- Actual
- Q(J);N_PINP(f)
- Vars
- Q(h);N_GUARD,XB(A)::QAB(J),XB(g)
- Q(h);N_GUARD,XQ(J)::B(A)+S(D)
- R(a);N_GUARD,XB(A)::S(H),XP(d)
- S(b);N_GUARD,XP(B)::QAB1(J)
- S(b);N_GUARD,XP(G)::QAB1(J)
- Q(h);N_GUARD::QAB(J),XB(g)
- Q(h);SBLOCK::B(A)+S(D),DCHECK
- Q(h);N_GUARD::B(A)+S(D)
- Q(h);N_GUARD,P_PINP(G)::B(A)+S(D)
- R(a);N_GUARD::S(H),XP(d)
- R(a);N_GUARD::B(A)+S(D)
- B(g);N_GUARD,P_PINP(G)::QAB1(J),XB(g)
- B(g);N_GUARD::QAB(J),XB(g)
- S(b);N_GUARD::QAB1(J),XS(b)
- P(d);S_CUTR(a)::S(H)
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).