MESON Chess Problem Database
Problem Display
PID: 173715 (Q7/8/1k1B4/8/1nB5/8/8/1K6 w - - 0 1)
Boros, Sandor
Zilahi, Zoltan
Magyar Sakkvilag, 1927
#2
4 + 2
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd3
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sa6
- 2.Qxa6#
- 1...Sc6
- 2.Qa6#
- 1...Sa2
- Tries
- 1.Ka1?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sd3
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Sc2+!
- 1...Sa6
- 1.Kb2?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Sd3+!
- 1...Sa6
- 1.Bf1?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Sd3!
- 1...Sa6
- 1.Be2?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Sd3!
- 1...Sa6
- 1.Bd3?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Sxd3!
- 1...Sa6
- 1.Bb5?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd3
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Kxb5!
- 1...Sa6
- 1.Qb7+?
- 1...Ka5
- 2.Qxb4#
- 2.Qb5#
- 1...Kxb7!
- 1...Ka5
- 1.Qa4?
- 1...Sa6
- 2.Qxa6#
- 1...Sa2
- 2.Qa6#
- 1...Sc2
- 2.Qa6#
- 1...Sd3
- 2.Qa6#
- 1...Sd5
- 2.Qa6#
- 1...Sc6
- 2.Qa6#
- 1...Kb7!
- 1...Sa6
- 1.Qa7+?
- 1...Kc6
- 2.Qc7#
- 1...Kxa7!
- 1...Kc6
- 1.Qc8?
- threat
- 2.Qc7#
- 1...Ka7
- 2.Bc5#
- 2.Qb8#
- 1...Sd5
- 2.Qa6#
- 1...Sa6
- 2.Qxa6#
- 1...Ka5!
- threat
- 1.Qd8+?
- 1...Kc6
- 2.Qc7#
- 1...Ka7
- 2.Qb8#
- 1...Kb7!
- 1...Kc6
- 1.Ka1?
- Keys
- 1.Qb8+!
- 1...Ka5
- 2.Qxb4#
- 2.Qb5#
- 1...Kc6
- 2.Qc7#
- 1...Ka5
- 1.Qb8+!
This is a version of 173597
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- S(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- S(a);CHECK
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- S(a);
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- S(a);
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- S(a);XB(B)
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- Refutation
- K(b);P-FLIGHT,XB(B)
- Try
- Q(D);CHECK
- Refutation
- K(b);P-FLIGHT,XQ(D)
- Try
- Q(D);
- Vars
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD,SBLOCK::QAR1(D)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D)
- Refutation
- K(b);S_FLIGHT,XQ(D)
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D)
- K(b);S_FLIGHT::QAB1(D)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D)
Developed and maintained by Brian Stephenson.
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