MESON Chess Problem Database
Problem Display
PID: 9742 (8/1N1Q4/p7/1n6/k3B3/1bP5/1P3K2/8 w - - 0 1)
Herland, Sigmund
Deutsches Wochenschach, 1909
#2
6 + 4
| 3360 | Simple Two-move Themes | 1924 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qxd1#
- 1...Bc2
- 2.Bxc2#
- 1...a5
- 2.Sc5#
- 1...Bd1
- Tries
- 1.Bc2?
- 1...a5
- 2.Sc5#
- 1...Bxc2!
- 1...a5
- 1.Qd4+?
- 1...Bc4
- 2.Bc2#
- 2.Qxc4#
- 1...Sxd4!
- 1...Bc4
- 1.Qc7?
- threat
- 2.Sc5#
- 2.Qa5#
- 1...Sxc3
- 2.Qa5#
- 1...Bd1
- 2.Sc5#
- 2.Qc4#
- 1...Ba2
- 2.Sc5#
- 1...Bc2
- 2.Sc5#
- 2.Bxc2#
- 2.Qc4#
- 1...Bc4
- 2.Sc5#
- 2.Qxc4#
- 1...Bd5
- 2.Sc5#
- 1...Be6
- 2.Sc5#
- 1...Bf7
- 2.Sc5#
- 1...Bg8
- 2.Sc5#
- 1...Sa3
- 2.Qa5#
- 1...Sd4
- 2.Qa5#
- 1...Sd6
- 2.Qa5#
- 1...Sa7
- 2.Qa5#
- 1...a5
- 2.Sc5#
- 2.Qxa5#
- 1...Sxc7!
- threat
- 1.Qd8?
- threat
- 2.Sc5#
- 2.Qa5#
- 1...Sxc3
- 2.Qa5#
- 1...Bd1
- 2.Sc5#
- 2.Qxd1#
- 1...Ba2
- 2.Sc5#
- 1...Bc2
- 2.Sc5#
- 2.Bxc2#
- 1...Bc4
- 2.Sc5#
- 1...Bd5
- 2.Sc5#
- 1...Be6
- 2.Sc5#
- 1...Bf7
- 2.Sc5#
- 1...Bg8
- 2.Sc5#
- 1...Sa3
- 2.Qa5#
- 1...Sd4
- 2.Qa5#
- 1...Sd6
- 2.Qa5#
- 1...Sa7
- 2.Qa5#
- 1...a5
- 2.Sc5#
- 2.Qxa5#
- 1...Sc7!
- threat
- 1.Bc2?
- Keys
- 1.Qg4!
- 1...Sxc3
- 2.Bc6#
- 1...Bd1
- 2.Bc2#
- 2.Qxd1#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bc4
- 2.Bc2#
- 1...Bd5
- 2.Bc2#
- 1...Be6
- 2.Bc2#
- 1...Bf7
- 2.Bc2#
- 1...Bg8
- 2.Bc2#
- 1...Sa3
- 2.Bc6#
- 1...Sd4
- 2.Bc6#
- 1...Sd6
- 2.Bc6#
- 1...Sa7
- 2.Bc6#
- 1...Sc7
- 2.Bc6#
- 1...a5
- 2.Sc5#
- 1...Sxc3
- 1.Qg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 1
- Sets
- B(a);OGATEB::QAB(F),XB(a)
- B(a);OGATEB::B(D),XB(a)
- P(d);SBLOCK::S(E)
- Tries
- Try
- B(D);P_PINB(a)
- Vars
- P(d);SBLOCK::S(E)
- Refutation
- B(a);N_SPINB(a),XB(D)
- Try
- Q(F);CHECK,N_PINS(c)
- Refutation
- S(c);XQ(F)
- Try
- Q(F);N_PINS(c)
- Threat
- DUALS(2)
- Vars
- S(c);XP(C)::QAR1(F)
- B(a);::S(E)
- S(c);::QAR1(F)
- Refutation
- S(c);XQ(F)
- Try
- Q(F);N_PINS(c)
- Threat
- DUALS(2)
- Vars
- S(c);XP(C)::QAR1(F)
- B(a);::S(E)
- S(c);::QAR1(F)
- Refutation
- S(c);
- Try
- Actual
- Q(F);N_PINS(c)
- Vars
- S(c);XP(C)::QAR(F)+B(D),DCHECK
- B(a);::QAR(F)+B(D),DCHECK
- B(a);::QAR(F)+B(D),DCHECK,XB(a)
- B(a);S_CUTS(c)::B(D)
- S(c);::QAR(F)+B(D),DCHECK
- S(c);S_CUTB(a)::B(D)
- P(d);SBLOCK::S(E)
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