MESON Chess Problem Database
Problem Display
PID: 87592 (NB6/1p6/k7/p7/4B3/2K5/5P2/Q7 w - - 0 1)
Krepko, Piotr Andrinovich
Buletin Problemistic, 1973
#2
6 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...a4
- 2.Qxa4#
- 1...b6
- 2.Sc7#
- 1...a4
- Tries
- 1.Kc2?
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qf6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4
- 1.Kd2?
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qf6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4
- 1.Kb3?
- 1...a4+
- 2.Qxa4#
- 1...b5
- 2.Qf6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4+
- 1.Kd3?
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qf6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4
- 1.Kc4?
- 1...a4
- 2.Qxa4#
- 1...b6
- 2.Sc7#
- 1...b5+!
- 1...a4
- 1.Bc7?
- threat
- 2.Qxa5#
- 1...Kb5
- 2.Qxa5#
- 1...Ka7
- 2.Qxa5#
- 1...a4
- 2.Qxa4#
- 1...b6!
- threat
- 1.Qb2?
- threat
- 2.Sc7#
- 2.Bxb7#
- 2.Qb6#
- 2.Qxb7#
- 1...a4
- 2.Qb6#
- 1...b6
- 2.Sc7#
- 2.Qxb6#
- 1...b5!
- threat
- 1.Qb1?
- threat
- 2.Sc7#
- 2.Bxb7#
- 2.Qb6#
- 2.Qxb7#
- 1...a4
- 2.Qb6#
- 1...b6
- 2.Sc7#
- 2.Qxb6#
- 1...b5!
- threat
- 1.Qd1?
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qd6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4
- 1.Qa3?
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qd6#
- 1...b6
- 2.Sc7#
- 1...Kb5!
- 1...a4
- 1.Qa4?
- 1...b6
- 2.Sc7#
- 1...b5!
- 1...b6
- 1.Kc2?
- Keys
- 1.Qa2!
- 1...Kb5
- 2.Qc4#
- 1...a4
- 2.Qxa4#
- 1...b5
- 2.Qe6#
- 1...b6
- 2.Sc7#
- 1...Kb5
- 1.Qa2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);SBLOCK::S(E)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(C);S_FLIGHT
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(C);P-FLIGHT
- Vars
- P(a);CHECK,OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(C);P-FLIGHT
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(C);P-FLIGHT
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);SBLOCK::S(E)
- Refutation
- P(c);CHECK
- Try
- B(F);
- Threat
- QAR1(A),XP(a)
- Vars
- K(b);N_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
- K(b);P-FLIGHT::QAR2(A),XP(a)
- P(a);OGATEB::QAR2(A),XP(a)
- Refutation
- P(c);
- Try
- Q(A);N_PINP(a)
- Threat
- DUALS(4)
- Vars
- P(a);::QAR1(A)
- Refutation
- P(c);
- Try
- Q(A);N_PINP(a)
- Threat
- DUALS(4)
- Vars
- P(a);::QAR1(A)
- Refutation
- P(c);
- Try
- Q(A);N_PINP(a)
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- Q(A);
- Vars
- P(c);SBLOCK::S(E)
- Refutation
- P(c);
- Try
- Actual
- Q(A);
- Vars
- K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
- P(a);OGATEB::QAR2(A),XP(a)
- P(c);N_GUARD,SBLOCK::QAR(A)
- P(c);SBLOCK::S(E)
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