MESON Chess Problem Database
Problem Display
PID: 18253 (8/4p2K/8/4pn1k/4N1pP/4P3/5P1R/7Q w - - 0 1)
Korski, Leon
Szachy, 1954
#2
7 + 5
| 3310 | 2345 Chess Problems | 1997 |
| 3242 | BCPS Rapid Solving (Cheltenham) | 2001 |
| 5626 | European Junior Chess Solving Championship | 2003 |
| 5405 | Chess Solving Yearbook 2003 | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Sxe3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sxh4
- 2.Rxh4#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...g3
- 2.Qf3#
- 2.Qd1#
- 1...e6
- 2.Sf6#
- 1...Sxe3
- Tries
- 1.Rh3?
- 1...Sxe3
- 2.Sg3#
- 1...Sxh4
- 2.Rxh4#
- 1...g3
- 2.Qf3#
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...gxh3!
- 1...Sxe3
- 1.Qg2?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qf3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qf3?
- threat
- 2.Qxf5#
- 1...Sxe3
- 2.Sg3#
- 2.Qf7#
- 1...Sxh4
- 2.Qf5#
- 2.Qf7#
- 1...Sg3
- 2.Sxg3#
- 2.Qf7#
- 1...Sd4
- 2.Sg3#
- 2.Qf7#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 2.Qf7#
- 1...e6
- 2.Sf6#
- 1...gxf3!
- threat
- 1.Qb1?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qc1?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qd1?
- 1...Sxe3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qe1?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qd1#
- 2.Qe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qf1?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qe2#
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.Qg1?
- 1...Sxe3
- 2.Sg3#
- 1...g3
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxh4!
- 1...Sxe3
- 1.f3?
- 1...Sxe3
- 2.Sg3#
- 1...Sxh4
- 2.Rxh4#
- 1...gxf3
- 2.Qxf3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...g3!
- 1...Sxe3
- 1.f4?
- 1...Sxe3
- 2.Sg3#
- 1...Sxh4
- 2.Sg3#
- 2.Rxh4#
- 1...gxf4 ep
- 2.Qxf3#
- 1...g3
- 2.Qf3#
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...exf4!
- 1...Sxe3
- 1.Rh3?
- Keys
- 1.Qa1!
- 1...Sxe3
- 2.Sg3#
- 1...Sxh4
- 2.Qxe5#
- 1...g3
- 2.Qd1#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...e6
- 2.Sf6#
- 1...Sxe3
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD,XP(D)::S(E)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- S(c);OGATE,P_SPINS(c),XP(F)::R1(C),XS(c)
- P(e);N_GUARD::S(E)
- Tries
- Try
- R(C);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);OGATE,P_SPINS(c),XP(F)::R1(C),XS(c)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- P(a);XR(C)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);P_PINP(a)
- Threat
- QAR2(A),XS(c)
- Vars
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- P(a);N_SPINP(a),XQ(A)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);P_PINP(a)
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- S(c);P_SPINS(c),XP(F)
- Try
- P(B);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);OGATE,P_SPINS(c),XP(F)::R1(C),XS(c)
- P(a);OGATE,XP(B)::QAB(A),XP(a)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- P(a);
- Try
- P(B);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- P(a);EP,OGATEB,XP(B)::QAB(A),XP(a)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
- Refutation
- P(b);XP(B)
- Try
- Actual
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(E)
- S(c);OGATEB,P_SPINS(c),XP(F)::QAR(A),XP(b)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
Developed and maintained by Brian Stephenson.
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