MESON Chess Problem Database
Problem Display
PID: 52391 (8/3p2p1/3p2Q1/3pp3/6P1/NN2kpBR/1PP4P/2nK4 w - - 0 1)
Kish, Alexander
Emery MT, 1936
#2
10 + 8
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sxb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...f2
- 2.Bxe5#
- 1...d4
- 2.Sc4#
- 1...e4
- 2.Qg5#
- 1...Sa2
- Tries
- 1.Kxc1?
- threat
- 2.Qd3#
- 1...Ke2
- 2.Qd3#
- 1...e4!
- threat
- 1.Ke1?
- 1...Sd3+
- 2.Qxd3#
- 1...Sxb3
- 2.Qd3#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...d4
- 2.Sc4#
- 1...e4
- 2.Qg5#
- 1...f2+!
- 1...Sd3+
- 1.Sb1?
- 1...Sxb3
- 2.Qd3#
- 1...f2
- 2.Bxe5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...e4
- 2.Qg5#
- 1...d4!
- 1...Sxb3
- 1.Sb5?
- 1...Sxb3
- 2.Qd3#
- 1...f2
- 2.Bxe5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...e4
- 2.Qg5#
- 1...d4!
- 1...Sxb3
- 1.Sa1?
- 1...Kd4
- 2.Bf2#
- 1...f2
- 2.Bxe5#
- 1...d4
- 2.Sc4#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...e4!
- 1...Kd4
- 1.Sxc1?
- threat
- 2.Qd3#
- 1...Kd4
- 2.Bf2#
- 1...e4!
- threat
- 1.Sd2?
- 1...Kd4
- 2.Bf2#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...f2
- 2.Bxe5#
- 1...d4
- 2.Sf1#
- 2.Sdc4#
- 2.Sac4#
- 2.Qe4#
- 2.Qg5#
- 1...e4!
- 1...Kd4
- 1.Sa5?
- 1...Kd4
- 2.Bf2#
- 1...f2
- 2.Bxe5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.S3c4#
- 2.S5c4#
- 1...e4!
- 1...Kd4
- 1.Bf2+?
- 1...Kf4
- 2.Qf5#
- 1...Kxf2!
- 1...Kf4
- 1.Rh4?
- 1...Sxb3
- 2.Qd3#
- 1...e4
- 2.Qg5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.Sc4#
- 1...f2!
- 1...Sxb3
- 1.Rh5?
- 1...Sxb3
- 2.Qd3#
- 1...e4
- 2.Qg5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.Sc4#
- 1...f2!
- 1...Sxb3
- 1.Rh7?
- 1...Sxb3
- 2.Qd3#
- 1...e4
- 2.Qg5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.Sc4#
- 1...f2!
- 1...Sxb3
- 1.Rh8?
- 1...Sxb3
- 2.Qd3#
- 1...e4
- 2.Qg5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.Sc4#
- 1...f2!
- 1...Sxb3
- 1.Qe4+?
- 1...dxe4
- 2.Sc4#
- 1...Kxe4!
- 1...dxe4
- 1.c3?
- threat
- 2.Sc2#
- 1...f2
- 2.Bxe5#
- 1...e4!
- threat
- 1.c4?
- threat
- 2.Sc2#
- 1...f2
- 2.Bxe5#
- 1...e4!
- threat
- 1.g5?
- 1...Sxb3
- 2.Qd3#
- 1...f2
- 2.Bxe5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d4
- 2.Sc4#
- 1...e4!
- 1...Sxb3
- 1.Kxc1?
- Keys
- 1.Sd4!
- 1...Kxd4
- 2.Bf2#
- 1...exd4
- 2.Qe8#
- 1...e4
- 2.Sf5#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...f2
- 2.Bxe5#
- 1...Kxd4
- 1.Sd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD,XS(F)::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- P(d);N_GUARD::S(E)
- P(e);SBLOCK::QAB(J)
- Tries
- Try
- K(A);P-FLIGHT,XS(a)
- Threat
- QAR1(J)
- Vars
- K(b);P-FLIGHT::QAB1(J)
- Refutation
- P(e);
- Try
- K(A);P-FLIGHT
- Vars
- S(a);CHECK,N_GUARD::QAR1(J),XS(a)
- S(a);N_GUARD,XS(F)::QAR1(J)
- S(a);N_GUARD::QAR1(J)
- P(d);N_GUARD::S(E)
- P(e);SBLOCK::QAB(J)
- Refutation
- P(c);CHECK
- Try
- S(E);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(e);SBLOCK::QAB(J)
- Refutation
- P(d);
- Try
- S(E);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(e);SBLOCK::QAB(J)
- Refutation
- P(d);
- Try
- S(F);
- Vars
- K(b);S_FLIGHT::B(G)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- P(d);N_GUARD,SBLOCK::S(E)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- Refutation
- P(e);
- Try
- S(F);XS(a)
- Threat
- QAR1(J)
- Vars
- K(b);S_FLIGHT::B(G)
- Refutation
- P(e);
- Try
- S(F);
- Vars
- K(b);S_FLIGHT::B(G)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- Refutation
- P(e);
- Try
- S(F);
- Vars
- K(b);S_FLIGHT::B(G)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- Refutation
- P(e);
- Try
- B(G);CHECK,P_PINP(c)
- Vars
- K(b);N_SPINP(c),S_FLIGHT::QAR1(J)
- Refutation
- K(b);N_SPINP(c),S_FLIGHT,XB(G)
- Try
- R(H);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(e);SBLOCK::QAB(J)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(d);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- R(H);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(e);SBLOCK::QAB(J)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(d);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- R(H);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(e);SBLOCK::QAB(J)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(d);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- R(H);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(e);SBLOCK::QAB(J)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(d);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- Q(J);CHECK
- Vars
- P(d);SBLOCK,XQ(J)::S(E)
- Refutation
- K(b);P-FLIGHT,XQ(J)
- Try
- P(C);
- Threat
- S(E)
- Vars
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- Refutation
- P(e);
- Try
- P(C);
- Threat
- S(E)
- Vars
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- Refutation
- P(e);
- Try
- P(I);
- Vars
- S(a);N_GUARD,XS(F)::QAR1(J)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(d);N_GUARD::S(E)
- Refutation
- P(e);
- Try
- Actual
- S(F);
- Vars
- K(b);S_FLIGHT,XS(F)::B(G)
- P(e);OGATEB,SBLOCK,XS(F)::QAR(J)
- P(e);SBLOCK::S(F)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(c);OGATEB,SBLOCK::R(H)+B(G),XP(e)
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).