MESON Chess Problem Database
Problem Display
PID: 183224 (B2N4/1n6/8/1p6/1pkp4/8/1P1Q4/1K4B1 w - - 0 1)
Dobbs, Gilbert S
American Chess Bulletin, 1907
#2
6 + 5
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Kb3
- 2.Qc2#
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Sa5
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sd6
- 2.Qc2#
- 1...Sxd8
- 2.Qc2#
- 1...b3
- 2.Qxd4#
- 1...Kb3
- Tries
- 1.Kc2?
- threat
- 2.Qxd4#
- 1...d3+
- 2.Qxd3#
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...b3+!
- threat
- 1.Sxb7?
- 1...Kb3
- 2.Qc2#
- 1...d3
- 2.Sa5#
- 1...b3
- 2.Qxd4#
- 1...Kd5!
- 1...Kb3
- 1.Bf2?
- 1...Kb3
- 2.Qc2#
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Sxd8
- 2.Qc2#
- 1...Sa5
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sd6
- 2.Qc2#
- 1...b3
- 2.Qxd4#
- 1...d3!
- 1...Kb3
- 1.Bxb7?
- threat
- 2.Qc2#
- 1...Kb3
- 2.Qc2#
- 1...Kc5
- 2.Qxd4#
- 1...b3
- 2.Qxd4#
- 1...d3!
- threat
- 1.Qc1+?
- 1...Kb3
- 2.Qc2#
- 1...Kd3
- 2.Qc2#
- 1...Kd5!
- 1...Kb3
- 1.Qd1?
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Sxd8
- 2.Qc2#
- 1...b3
- 2.Qxd4#
- 1...Sa5
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sd6
- 2.Qc2#
- 1...d3!
- 1...Kc5
- 1.Qg2?
- 1...Kb3
- 2.Qc2#
- 1...Kd3
- 2.Qc2#
- 1...Kc5
- 2.Qc6#
- 1...Sxd8
- 2.Qc2#
- 1...d3
- 2.Qg8#
- 1...Sa5
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sd6
- 2.Qc2#
- 1...b3!
- 1...Kb3
- 1.Qd3+?
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Kxd3!
- 1...Kc5
- 1.b3+?
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Kxb3!
- 1...Kc5
- 1.Kc2?
- Keys
- 1.Qf2!
- 1...Kb3
- 2.Qc2#
- 1...Kd3
- 2.Qc2#
- 1...Kc5
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Sxd8
- 2.Qc2#
- 1...d3
- 2.Qf7#
- 1...Sa5
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sd6
- 2.Qc2#
- 1...b3
- 2.Qxd4#
- 1...Kb3
- 1.Qf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(b);S_FLIGHT::QAB1(D)
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- S(e);::QAR2(D)
- S(e);SBLOCK::QAR2(D)
- S(e);XS(F)::QAR2(D)
- P(a);SBLOCK::QAR1(D),XP(c)
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- QAR1(D),XP(c)
- Vars
- P(c);CHECK::QAB1(D),XP(c)
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- Refutation
- P(a);CHECK
- Try
- S(F);XS(e)
- Vars
- K(b);S_FLIGHT::QAB1(D)
- P(c);::S(F)
- P(a);SBLOCK::QAR1(D),XP(c)
- Refutation
- K(b);P_SPINP(c),S_FLIGHT
- Try
- B(B);
- Vars
- K(b);S_FLIGHT::QAB1(D)
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- S(e);XS(F)::QAR2(D)
- S(e);::QAR2(D)
- S(e);SBLOCK::QAR2(D)
- P(a);SBLOCK::QAR1(D),XP(c)
- Refutation
- P(c);
- Try
- B(E);XS(e)
- Threat
- QAR2(D)
- Vars
- K(b);S_FLIGHT::QAB1(D)
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- P(a);SBLOCK::QAR1(D),XP(c)
- Refutation
- P(c);
- Try
- Q(D);CHECK
- Vars
- K(b);S_FLIGHT::QAB1(D)
- Refutation
- K(b);P_SPINS(e),S_FLIGHT
- Try
- Q(D);
- Vars
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- S(e);XS(F)::QAR2(D)
- P(a);SBLOCK::QAR1(D),XP(c)
- S(e);::QAR2(D)
- S(e);SBLOCK::QAR2(D)
- Refutation
- P(c);
- Try
- Q(D);
- Vars
- K(b);S_FLIGHT::QAB1(D)
- K(b);P-FLIGHT,P_SPINP(c)::QAR1(D)
- S(e);XS(F)::QAR2(D)
- P(c);SBLOCK::QAB(D)
- S(e);::QAR2(D)
- S(e);SBLOCK::QAR2(D)
- Refutation
- P(a);
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- Refutation
- K(b);S_FLIGHT,XQ(D)
- Try
- P(C);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- Refutation
- K(b);S_FLIGHT,XP(C)
- Try
- Actual
- Q(D);
- Vars
- K(b);S_FLIGHT::QAB1(D)
- K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- K(b);P_SPINS(e),S_FLIGHT::QAR1(D),XP(c)
- S(e);XS(F)::QAR2(D)
- P(c);SBLOCK::QAB(D)
- S(e);::QAR2(D)
- S(e);SBLOCK::QAR2(D)
- P(a);SBLOCK::QAR1(D),XP(c)
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