MESON Chess Problem Database
Problem Display
PID: 10390 (1K2R1n1/8/1p2n1NB/1r3kPB/3Pb3/Q5P1/4R2q/5r1N w - - 0 1)
Lipton, Michael
Die Schwalbe, 1964
#2
11 + 8
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 56 | The Problemist | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sh4#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxh1
- 2.g4#
- 1...Qxe2
- 2.Sh4#
- 1...Qf2
- 2.Sh4#
- 2.g4#
- 1...Qg2
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Re5
- 2.g4#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Re5#
- 1...Sf4
- 2.g4#
- 1...Sc5
- 2.Re5#
- 1...Sc7
- 2.g4#
- 1...Sf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Qg1
- Tries
- 1.Rf2+?
- 1...Qxf2
- 2.Sh4#
- 2.g4#
- 1...Bf3
- 2.Qd3#
- 1...Sf4
- 2.g4#
- 1...Rxf2!
- 1...Qxf2
- 1.Rf8+?
- 1...Sf6
- 2.Se7#
- 2.Rxf6#
- 1...Sxf8!
- 1...Sf6
- 1.Qd6?
- threat
- 2.Qxe6#
- 2.g4#
- 1...Qxg3
- 2.Sxg3#
- 1...Qxe2
- 2.Sh4#
- 2.Qxe6#
- 1...Qxh5
- 2.Qxe6#
- 1...Sxd4
- 2.g4#
- 1...Sxg5
- 2.g4#
- 1...Qg1
- 2.Sh4#
- 2.Qxe6#
- 1...Qg2
- 2.Sh4#
- 2.Qxe6#
- 1...Qh3
- 2.Qxe6#
- 1...Qh4
- 2.Sxh4#
- 2.Qxe6#
- 1...Rg1
- 2.Qxe6#
- 1...Rf4
- 2.Qxe6#
- 1...Re5
- 2.Qxe5#
- 2.g4#
- 1...Bf3
- 2.Qxe6#
- 1...Bd5
- 2.Re5#
- 2.Qe5#
- 2.g4#
- 1...Sf4
- 2.g4#
- 1...Sc5
- 2.Re5#
- 2.Qe5#
- 2.g4#
- 1...Sc7
- 2.g4#
- 1...Sg7
- 2.g4#
- 1...Sd8
- 2.g4#
- 1...Sf8
- 2.g4#
- 1...Sf6
- 2.Se7#
- 2.Qxe6#
- 1...Se7
- 2.Sxe7#
- 2.g4#
- 1...Sxh6!
- threat
- 1.Qf8+?
- 1...Sf6
- 2.Se7#
- 2.Qxf6#
- 1...Sxf8!
- 1...Sf6
- 1.Qe3?
- threat
- 2.Qxe4#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxh1
- 2.g4#
- 1...Qxe2
- 2.Sh4#
- 1...Bxh1
- 2.Qxe6#
- 1...Sxg5
- 2.Qxg5#
- 1...Sxh6
- 2.Se7#
- 1...Qg2
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Re5
- 2.g4#
- 1...Bb1
- 2.Qxe6#
- 1...Bc2
- 2.Qxe6#
- 1...Bg2
- 2.Qxe6#
- 1...Bd3
- 2.Qxd3#
- 2.Qxe6#
- 1...Bf3
- 2.Qxe6#
- 1...Bd5
- 2.Qe5#
- 1...Bc6
- 2.Qxe6#
- 1...Bb7
- 2.Qxe6#
- 1...Ba8
- 2.Qxe6#
- 1...Sc5
- 2.Re5#
- 1...Sf6
- 2.Se7#
- 1...Rf4!
- threat
- 1.Rf2+?
- Keys
- 1.Qe7!
- threat
- 2.Qxe6#
- 1...Qxg3+
- 2.Sxg3#
- 1...Sxd4
- 2.Qxe4#
- 1...Sxg5
- 2.Qxg5#
- 1...Sxh6
- 2.Qf6#
- 1...Sxe7
- 2.Sxe7#
- 1...Re5
- 2.g4#
- 1...Bd5
- 2.Re5#
- 1...Sf4
- 2.Qxe4#
- 2.g4#
- 1...Sc5
- 2.Qe5#
- 1...Sc7
- 2.Qxe4#
- 2.g4#
- 1...Sg7
- 2.Qxe4#
- 1...Sd8
- 2.Qxe4#
- 1...Sf8
- 2.Qxe4#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- Q(b);N_GUARD,N_PINP(D)::S(H)
- Q(b);CHECK,XP(D)::S(A),XQ(b)
- Q(b);N_PINP(D),XS(A)::P(D)
- Q(b);N_GUARD,N_PINP(D),XR(B)::S(H)
- Q(b);N_GUARD,N_PINP(D)::S(H),XQ(b)
- R(d);N_PINP(D)::P(D)
- B(c);OGATEB::QAB(C),XB(c)
- B(c);OGATE::R1(B)
- S(g);N_PINP(D)::P(D)
- S(g);OGATE::R1(K)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- Tries
- Try
- R(B);CHECK
- Vars
- B(c);P_SPINB(c),S_CUTQ(b),S_CUTR(a),S_CUTS(g)::QAB(C)
- S(g);N_PINP(D),P_SPINS(g)::P(D)
- Refutation
- R(a);XR(B)
- Try
- R(K);CHECK
- Refutation
- S(g);XR(K)
- Try
- Q(C);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- Q(b);P_PINQ(C),XP(D)::S(A),XQ(b)
- Q(b);XB(G)::QAB1(C),XS(g)
- S(g);XP(E)::P(D)
- S(g);XP(F)::P(D)
- Q(b);::QAB1(C),XS(g)
- R(a);::QAB1(C),XS(g)
- B(c);::QAB1(C),XS(g)
- S(g);::P(D)
- Refutation
- S(h);XB(I)
- Try
- Q(C);CHECK
- Refutation
- S(g);XQ(C)
- Try
- Q(C);
- Threat
- QAB1(C),XB(c)
- Vars
- Q(b);CHECK,XP(D)::S(A),XQ(b)
- Q(b);N_PINP(D),XS(A)::P(D)
- Q(b);N_GUARD,N_PINP(D),XR(B)::S(H)
- B(c);OGATE,XS(A)::QAB1(C),XS(g)
- S(g);OGATE,XP(F)::QAR1(C),XS(g)
- S(h);N_GUARD,XB(I)::S(H)
- Q(b);N_GUARD,N_PINP(D)::S(H)
- Q(b);N_GUARD,N_PINP(D)::S(H),XQ(b)
- R(d);N_PINP(D)::P(D)
- B(c);OGATE::QAB1(C),XS(g)
- B(c);OGATE::QAR1(C)
- S(g);OGATE::R1(K)
- S(h);N_GUARD::S(H)
- Refutation
- R(a);N_PINP(D)
- Try
- Actual
- Q(C);
- Threat
- QAB1(C),XS(g)
- Vars
- Q(b);CHECK,XP(D)::S(A),XQ(b)
- S(g);OGATE,XP(E)::QAB1(C),XB(c)
- S(g);OGATE,XP(F)::QAR1(C),XS(g)
- S(h);N_GUARD,XB(I)::QAR1(C)
- S(h);XQ(C)::S(H),XS(h)
- R(d);N_PINP(D)::P(D)
- B(c);OGATE::R1(B)
- S(g);OGATE::QAR1(C)
- S(g);OGATE::QAB1(C),XB(c)
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).