MESON Chess Problem Database
Problem Display
PID: 157905 (Q1b1N3/1q6/5p2/3Pk3/3pB3/8/3B1K2/4R3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1956
#2
7 + 5
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qxd5
- 2.Qxd5#
- 1...Qa6
- 2.Bd3#
- 1...Qb1
- 2.Bxb1#
- 1...Qb2
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qb3
- 2.Bd3#
- 1...Qb4
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qb5
- 2.Bd3#
- 1...Qb6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qa7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qc7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qd7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qe7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qf7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qg7
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Qh7
- 2.Bg6#
- 2.Bxh7#
- 1...Qb8
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 2.Qxb8#
- 1...f5
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 1...Qxd5
- Tries
- 1.Kf3?
- threat
- 2.Bf4#
- 1...Qb3+
- 2.Bd3#
- 1...Qxd5
- 2.Qxd5#
- 1...d3
- 2.Bc3#
- 1...Bg4+!
- threat
- 1.Qxb7?
- threat
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 2.Qc7#
- 2.Qb8#
- 1...d3
- 2.Qb2#
- 1...Bg4
- 2.Qc7#
- 2.Qb8#
- 1...Bf5
- 2.Qc7#
- 2.Qb8#
- 1...f5
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Qc7#
- 2.Qg7#
- 2.Qb8#
- 1...Bxb7!
- threat
- 1.Qa3?
- threat
- 2.Qd6#
- 2.Qg3#
- 1...d3
- 2.Qc3#
- 1...Qa6
- 2.Qg3#
- 1...Qc6
- 2.Qg3#
- 1...Qb3
- 2.Qd6#
- 1...Qb4
- 2.Qg3#
- 1...Qb6
- 2.Qg3#
- 1...Qc7
- 2.Qg3#
- 1...Qd7
- 2.Qg3#
- 1...Qe7
- 2.Qg3#
- 1...Qg7
- 2.Qd6#
- 1...Qb8
- 2.Qg3#
- 1...f5
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Qd6#
- 1...Qxd5!
- threat
- 1.Qb8+?
- 1...Qc7
- 2.Qxc7#
- 1...Qxb8!
- 1...Qc7
- 1.Kf3?
- Keys
- 1.Kg3!
- threat
- 2.Bf4#
- 1...Qb3+
- 2.Bd3#
- 1...Qg7+
- 2.Bg6#
- 1...Qxd5
- 2.Qxd5#
- 1...d3
- 2.Bc3#
- threat
- 1.Kg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(d);OGATE,XP(E)::QAR1(F),XQ(d)
- Q(d);::R(A)+B(D)
- Q(d);::R(A)+B(D),XQ(d)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- B(B)
- Vars
- Q(d);CHECK::R(A)+B(D)
- Q(d);OGATE,P_PINB(D),XP(E)::QAR1(F),XQ(d)
- P(a);OGATEB::B(B)
- Refutation
- B(e);CHECK
- Try
- Q(F);XQ(d)
- Threat
- DUALS(7)
- Vars
- P(a);OGATEB::QAB(F)
- Refutation
- B(e);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(a);OGATEB::QAB(F)
- Q(d);::QAB(F)
- Q(d);::QAB1(F)
- Refutation
- Q(d);XP(E)
- Try
- Q(F);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAB(F),XQ(d)
- Refutation
- Q(d);XQ(F)
- Try
- Actual
- K(C);S_FLIGHT
- Threat
- B(B)
- Vars
- Q(d);CHECK::R(A)+B(D)
- Q(d);OGATE,XP(E)::QAR1(F),XQ(d)
- P(a);OGATEB::B(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).