MESON Chess Problem Database
Problem Display
PID: 114824 (2Q5/8/2bP4/BRNR4/2k3K1/2N5/8/8 w - - 0 1)
Andrade, Barry Jack da Costa
Irish Saturday Night, 1950
#2
8 + 2
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bb7
- 2.Sxb7#
- 1...Bd7+
- 2.Sxd7#
- 1...Ba8
- 2.Sb7#
- 1...Be8
- 2.Sd7#
- 1...Bb7
- Tries
- 1.Kf3?
- threat
- 2.Qg4#
- 1...Bd7
- 2.Sxd7#
- 1...Bxd5+!
- threat
- 1.Kg3?
- threat
- 2.Qg4#
- 1...Bd7
- 2.Sxd7#
- 1...Bxd5!
- threat
- 1.Kh3?
- threat
- 2.Qg4#
- 1...Bd7+
- 2.Sxd7#
- 1...Bxd5!
- threat
- 1.Kh4?
- threat
- 2.Qg4#
- 1...Bd7
- 2.Sxd7#
- 1...Bxd5!
- threat
- 1.Kg5?
- threat
- 2.Qg4#
- 1...Bd7
- 2.Sxd7#
- 1...Bxd5!
- threat
- 1.Sd1?
- 1...Bd7+
- 2.Sxd7#
- 1...Kxb5
- 2.Qa6#
- 1...Bxb5
- 2.Se3#
- 1...Bxd5
- 2.Rb4#
- 1...Bb7
- 2.Sxb7#
- 1...Ba8
- 2.Sb7#
- 1...Be8
- 2.Sd7#
- 1...Kxd5!
- 1...Bd7+
- 1.S3a4?
- 1...Bd7+
- 2.Sxd7#
- 1...Kxb5
- 2.Qa6#
- 1...Bxb5
- 2.Sb6#
- 1...Bxd5
- 2.Rb4#
- 1...Bb7
- 2.Sxb7#
- 1...Ba8
- 2.Sb7#
- 1...Be8
- 2.Sd7#
- 1...Kxd5!
- 1...Bd7+
- 1.Qf5?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qf1#
- 2.Qf4#
- 1...Bxd5
- 2.Qd3#
- 2.Qxd5#
- 1...Bd7!
- threat
- 1.Qe6?
- threat
- 2.Qe2#
- 2.Qe4#
- 1...Bxd5
- 2.Qxd5#
- 1...Bd7!
- threat
- 1.Kf3?
- Keys
- 1.Se2!
- 1...Bd7+
- 2.Sxd7#
- 1...Kxb5
- 2.Qa6#
- 1...Kxd5
- 2.Qe6#
- 1...Bxb5
- 2.Rd4#
- 1...Bxd5
- 2.Rb4#
- 1...Bb7
- 2.Sxb7#
- 1...Ba8
- 2.Sb7#
- 1...Be8
- 2.Sd7#
- 1...Bd7+
- 1.Se2!
Anticipated by 115393(1946)
This anticipates 67243(1956)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(b);::QAR(H)+S(E),XB(b)
- B(b);CHECK::QAR(H)+S(E),XB(b)
- B(b);::QAR(H)+S(E)
- Tries
- Try
- K(B);P_SPINR(F),S_FLIGHT
- Threat
- QAR(H)
- Vars
- B(b);N_PINR(F)::QAR(H)+S(E),XB(b)
- Refutation
- B(b);CHECK,XR(F)
- Try
- K(B);P-FLIGHT
- Threat
- QAR(H)
- Vars
- B(b);::QAR(H)+S(E),XB(b)
- Refutation
- B(b);XR(F)
- Try
- K(B);S_FLIGHT
- Threat
- QAR(H)
- Vars
- B(b);CHECK::QAR(H)+S(E),XB(b)
- Refutation
- B(b);XR(F)
- Try
- K(B);P-FLIGHT
- Threat
- QAR(H)
- Vars
- B(b);::QAR(H)+S(E),XB(b)
- Refutation
- B(b);XR(F)
- Try
- K(B);P-FLIGHT
- Threat
- QAR(H)
- Vars
- B(b);::QAR(H)+S(E),XB(b)
- Refutation
- B(b);XR(F)
- Try
- S(A);
- Vars
- B(b);CHECK::QAR(H)+S(E),XB(b)
- K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(H)
- B(b);SBLOCK,XR(D)::S(A)
- B(b);SBLOCK,XR(F)::R1(D)
- B(b);::QAR(H)+S(E),XB(b)
- B(b);::QAR(H)+S(E)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- S(A);
- Vars
- B(b);CHECK::QAR(H)+S(E),XB(b)
- K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(H)
- B(b);SBLOCK,XR(D)::S(A)
- B(b);SBLOCK,XR(F)::R1(D)
- B(b);::QAR(H)+S(E),XB(b)
- B(b);::QAR(H)+S(E)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Threat
- DUALS(4)
- Refutation
- B(b);P_PINQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,P_SPINB(b),XR(F)::QAB1(H),XB(b)
- Refutation
- B(b);P_PINQ(H)
- Try
- Actual
- S(A);
- Vars
- B(b);CHECK::QAR(H)+S(E),XB(b)
- K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(H)
- K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(H)
- B(b);SBLOCK,XR(D)::R1(F)
- B(b);SBLOCK,XR(F)::R1(D)
- B(b);::QAR(H)+S(E),XB(b)
- B(b);::QAR(H)+S(E)
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