MESON Chess Problem Database
Problem Display
PID: 177949 (8/7n/4Rpp1/3QNk2/4N3/6B1/K7/8 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
Sahs (Latvia), 1989
#2
6 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...Sg5
- Tries
- 1.Ka1?
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...fxe5!
- 1...Sg5
- 1.Kb1?
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...fxe5!
- 1...Sg5
- 1.Kb2?
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...fxe5!
- 1...Sg5
- 1.Ka3?
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...fxe5!
- 1...Sg5
- 1.Kb3?
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...g5
- 2.Sd6#
- 1...fxe5!
- 1...Sg5
- 1.Sf2?
- threat
- 2.Sed3#
- 2.Sf3#
- 2.Sc4#
- 2.Seg4#
- 2.Sc6#
- 2.Sd7#
- 2.Sf7#
- 1...Kg5
- 2.Sf7#
- 1...fxe5
- 2.Qxe5#
- 1...g5!
- threat
- 1.Bh2?
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...g5
- 1.Ra6?
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...g5
- 1.Rb6?
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...g5
- 1.Rc6?
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...g5
- 1.Qc4?
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...g5
- 1.Qd3?
- 1...Kxe6
- 2.Qd7#
- 1...g5
- 2.Sc5#
- 1...Sg5
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...fxe5!
- 1...Kxe6
- 1.Qd7?
- 1...Kxe4
- 2.Qd3#
- 1...fxe5
- 2.Rxe5#
- 1...g5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 1...Sf8!
- 1...Kxe4
- 1.Ka1?
- Keys
- 1.Qd1!
- threat
- 2.Qg4#
- 1...Kxe4
- 2.Qd3#
- 1...Kxe6
- 2.Qd7#
- 1...fxe5
- 2.Rxe5#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- K(A);S_FLIGHT
- Vars
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- K(A);S_FLIGHT
- Vars
- S(d);N_GUARD::R1(F),XP(b)
- P(c);SBLOCK::S(C)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- S(C);
- Threat
- DUALS(7)
- Vars
- K(a);P-FLIGHT::QAR(D)+S(E),DCHECK
- P(b);OGATE,P_SPINP(b),XS(E)::QAR1(D),XP(b)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- P(c);SBLOCK::S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- R(F);
- Vars
- P(c);SBLOCK::S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- R(F);
- Vars
- P(c);SBLOCK::S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- R(F);
- Vars
- P(c);SBLOCK::S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);P_SPINP(b),XS(E)
- Try
- Q(D);
- Vars
- P(c);SBLOCK::S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);XS(E)
- Try
- Q(D);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(D)
- P(c);SBLOCK::QAB(D)+S(C)
- S(d);N_GUARD::R1(F),XP(b)
- Refutation
- P(b);XS(E)
- Try
- Q(D);
- Vars
- K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
- P(b);OGATE,XS(E)::QAB(D)+R(F),DCHECK,XP(b)
- P(c);SBLOCK::S(C)
- S(d);SBLOCK::S(C)
- Refutation
- S(d);
- Try
- Actual
- Q(D);
- Threat
- QAB1(D)
- Vars
- K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
- K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(D)
- P(b);OGATE,XS(E)::R1(F),XP(b)
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