MESON Chess Problem Database
Problem Display
PID: 16552 (3r1B2/2pp1Qp1/n1P1n1p1/3k2p1/2RN1pN1/2KP4/8/8 w - - 0 1)
Stewart, John
Chess, 1941
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Rxf8
- 2.Qxd7#
- 1...Sb4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sb8
- 2.Rc5#
- 1...f3
- 2.Qxf3#
- 1...dxc6
- 2.Qxe6#
- 1...d6
- 2.Qxe6#
- 1...Ra8
- Tries
- 1.Sc2?
- 1...Rxf8
- 2.Qxd7#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Sb4#
- 2.Rxc5#
- 1...Sb4
- 2.Sxb4#
- 2.Rc5#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb8
- 2.Sb4#
- 2.Rc5#
- 1...f3
- 2.Sce3#
- 2.Qxf3#
- 1...d6!
- 1...Rxf8
- 1.Se2?
- 1...Rxf8
- 2.Qxd7#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Rxc5#
- 1...Sb4
- 2.Rc5#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb8
- 2.Rc5#
- 1...f3
- 2.Qxf3#
- 1...d6!
- 1...Rxf8
- 1.Sb3?
- 1...Rxf8
- 2.Qxd7#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Rxc5#
- 1...Sb4
- 2.Rc5#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb8
- 2.Rc5#
- 1...f3
- 2.Qxf3#
- 1...d6!
- 1...Rxf8
- 1.Sf3?
- 1...Rxf8
- 2.Qxd7#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb4
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...d6!
- 1...Rxf8
- 1.Sb5?
- 1...Rxf8
- 2.Qxd7#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb4
- 2.Sxc7#
- 2.Rc5#
- 1...Sb8
- 2.Sxc7#
- 2.Rc5#
- 1...f3
- 2.Qxf3#
- 1...d6!
- 1...Rxf8
- 1.Sxe6?
- threat
- 2.Sd4#
- 2.Sxf4#
- 2.Sxg5#
- 2.Sxc7#
- 2.Sxg7#
- 2.Sxd8#
- 1...Rxf8
- 2.Qxd7#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sd4#
- 2.Sxf4#
- 2.Sxg5#
- 2.Sxc7#
- 2.Sxg7#
- 2.Sd8#
- 2.Qxd7#
- 1...Rb8
- 2.Sd4#
- 2.Sxf4#
- 2.Sxg5#
- 2.Sxc7#
- 2.Sxg7#
- 2.Sd8#
- 2.Qxd7#
- 1...Rc8
- 2.Sd4#
- 2.Sxf4#
- 2.Sxg5#
- 2.Sxc7#
- 2.Sxg7#
- 2.Sd8#
- 2.Qxd7#
- 1...Re8
- 2.Sxf4#
- 2.Sxc7#
- 2.Qxd7#
- 1...f3
- 2.Sd4#
- 2.Sf4#
- 2.Sxg5#
- 2.Sxc7#
- 2.Sxg7#
- 2.Sxd8#
- 1...dxe6!
- threat
- 1.Se3+?
- 1...Ke5
- 2.Sf3#
- 1...fxe3!
- 1...Ke5
- 1.Qf6?
- threat
- 2.Qe5#
- 1...d6
- 2.Qxe6#
- 1...gxf6!
- threat
- 1.cxd7?
- threat
- 2.Qxe6#
- 1...Sc5
- 2.Rxc5#
- 1...Re8!
- threat
- 1.Sc2?
- Keys
- 1.Sf5!
- 1...Rxf8
- 2.Qxd7#
- 1...gxf5
- 2.Qxf5#
- 1...dxc6
- 2.Rd4#
- 1...Sc5
- 2.Rxc5#
- 1...d6
- 2.Se7#
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Sb4
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...f3
- 2.Sfe3#
- 1...Rxf8
- 1.Sf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(j);N_GUARD::QAR2(G),XP(h)
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- P(a);OGATE::QAB(G),XP(a)
- P(h);N_GUARD,XP(F)::QAB1(G),XS(e)
- P(h);N_GUARD::QAB1(G),XS(e)
- Tries
- Try
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(h);SBLOCK,XP(F)::R1(C)
- R(j);N_GUARD::QAR2(G),XP(h)
- Refutation
- P(h);
- Try
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(h);SBLOCK,XP(F)::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- R(j);N_GUARD::QAR2(G),XP(h)
- P(a);OGATE::QAB(G),XP(a)
- Refutation
- P(h);
- Try
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(h);SBLOCK,XP(F)::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- R(j);N_GUARD::QAR2(G),XP(h)
- P(a);OGATE::QAB(G),XP(a)
- Refutation
- P(h);
- Try
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(h);SBLOCK,XP(F)::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- R(j);N_GUARD::QAR2(G),XP(h)
- S(d);N_GUARD::R1(C)
- Refutation
- P(h);
- Try
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(h);SBLOCK,XP(F)::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- R(j);N_GUARD::QAR2(G),XP(h)
- P(a);OGATE::QAB(G),XP(a)
- Refutation
- P(h);
- Try
- S(D);XS(e)
- Threat
- DUALS(6)
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- S(d);N_GUARD::R1(C),XS(d)
- Refutation
- P(h);P_SPINP(h),XS(D)
- Try
- S(E);CHECK
- Vars
- K(b);N_SPINS(e),P-FLIGHT::S(D)
- Refutation
- P(a);XS(E)
- Try
- Q(G);N_PINS(e)
- Threat
- QAR1(G)
- Vars
- P(h);N_GUARD::QAB1(G),XS(e)
- Refutation
- P(i);XQ(G)
- Try
- P(F);XP(h)
- Threat
- QAB1(G),XS(e)
- Vars
- S(d);N_GUARD::R1(C),XS(d)
- Refutation
- R(j);
- Try
- Actual
- S(D);
- Vars
- R(j);N_GUARD,XB(H)::QAR2(G),XP(h)
- P(f);OGATE,XS(D)::QAR2(G),XP(f)
- P(h);SBLOCK,XP(F)::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- P(h);SBLOCK::S(D)
- R(j);N_GUARD::QAR2(G),XP(h)
- S(d);N_GUARD::R1(C)
- P(a);N_GUARD::S(D)
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).