MESON Chess Problem Database
Problem Display
PID: 263417 (8/5K2/3N1Q2/1Bkp4/8/8/8/B7 w - - 0 1)
Lipton, Michael
The Problemist Supplement, 2019
#2
5 + 2
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb4
- Tries
- 1.Ke6?
- threat
- 2.Qd4#
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- threat
- 1.Kg6?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Ke7?
- threat
- 2.Qd4#
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- threat
- 1.Kg7?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Ke8?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Kf8?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Kg8?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Sb7+?
- 1...Kb4
- 2.Qb2#
- 1...Kxb5!
- 1...Kb4
- 1.Bb2?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Bc3?
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...d4
- 1.Bd7?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Be8?
- 1...Kb4
- 2.Qc3#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kb4
- 1.Qc3+?
- 1...Kxd6
- 2.Qc6#
- 1...Kb6!
- 1...Kxd6
- 1.Qh4?
- 1...Kxd6
- 2.Qe7#
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...Kxd6
- 1.Qe5?
- 1...Kb4
- 2.Qc3#
- 1...Kb6!
- 1...Kb4
- 1.Qf2+?
- 1...Kxd6
- 2.Qb6#
- 1...d4
- 2.Qxd4#
- 1...Kb4!
- 1...Kxd6
- 1.Qf4?
- 1...d4
- 2.Qxd4#
- 1...Kb6!
- 1...d4
- 1.Ke6?
- Keys
- 1.Qd4+!
- 1...Kxd6
- 2.Qb6#
- 1...Kxd6
- 1.Qd4+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Tries
- Try
- K(E);S_FLIGHT
- Threat
- QAB1(D)
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);S_FLIGHT
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);P-FLIGHT
- Threat
- QAB1(D)
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);P-FLIGHT
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);S_FLIGHT
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);P-FLIGHT
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);S_FLIGHT
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- K(a);N_GUARD,S_FLIGHT::QAR2(D)
- Refutation
- K(a);P-FLIGHT,XB(B)
- Try
- B(A);
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(A);
- Vars
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(B);
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(B);
- Vars
- K(a);N_GUARD,S_FLIGHT::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(a);OGATE,S_FLIGHT,XS(C)::QAR1(D)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(D);
- Vars
- K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(D);P_PINP(b)
- Vars
- K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAB1(D)
- Refutation
- K(a);N_SPINP(b),S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(a);OGATE,S_FLIGHT,XS(C)::QAR2(D)
- P(b);P_SPINP(b)::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(D);
- Vars
- P(b);::QAB1(D),XP(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- Q(D);CHECK
- Vars
- K(a);OGATE,P_SPINP(b),S_FLIGHT,XS(C)::QAR2(D)
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