MESON Chess Problem Database
Problem Display
PID: 196959 (1B3q2/8/Q2Pp3/3pk1P1/1R6/6N1/K2P4/6n1 w - - 0 1)
Wilhelm, Joseph A
American Chess Bulletin, 1919
#2
8 + 5
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Qh6
- 2.d7#
- 1...Qe7
- 2.dxe7#
- 1...Qg7
- 2.d7#
- 1...Qf1
- 2.d7#
- 1...Qf2
- 2.d7#
- 1...Qf3
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.d7#
- 1...Qf6
- 2.d7#
- 1...Qf7
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qe2#
- 1...Sh3
- 2.Qe2#
- 1...Qxd6
- Tries
- 1.Rg4?
- threat
- 2.d4#
- 1...d4
- 2.Qb5#
- 2.Qa5#
- 1...Qf2
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qe2#
- 1...Qf4!
- threat
- 1.Rh4?
- threat
- 2.d4#
- 1...d4
- 2.Qb5#
- 2.Qa5#
- 1...Qf2
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qe2#
- 1...Qf4!
- threat
- 1.Qd3?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...d4
- 2.Qe4#
- 2.Qxd4#
- 1...Qf2
- 2.d7#
- 1...Qf3
- 2.Qd4#
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.Qd4#
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 2.Qe3#
- 1...Sf3
- 2.Qe2#
- 2.Qe3#
- 1...Qxb8!
- threat
- 1.Qc4?
- threat
- 2.Qd4#
- 1...Qxb8
- 2.Qf4#
- 1...d4
- 2.Qxd4#
- 1...Qf2
- 2.d7#
- 1...Qf4
- 2.Qxf4#
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qe2#
- 1...dxc4!
- threat
- 1.Qb5?
- threat
- 2.Re4#
- 1...Qf3
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.d7#
- 1...Qxb8!
- threat
- 1.Qa5?
- threat
- 2.Re4#
- 1...Qf3
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.d7#
- 1...Qxb8!
- threat
- 1.Qb6?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Qf2
- 2.d7#
- 1...Qf3
- 2.Qd4#
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.Qd4#
- 2.d7#
- 1...Se2
- 2.Qe3#
- 1...Sf3
- 2.Qe3#
- 1...Qxb8!
- threat
- 1.Qa7?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Qf2
- 2.d7#
- 1...Qf3
- 2.Qd4#
- 2.d7#
- 1...Qf4
- 2.d7#
- 1...Qf5
- 2.Qd4#
- 2.d7#
- 1...Se2
- 2.Qe3#
- 1...Sf3
- 2.Qe3#
- 1...Qxb8!
- threat
- 1.d7+?
- 1...Qd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Qxb8!
- 1...Qd6
- 1.Rg4?
- Keys
- 1.Qf1!
- threat
- 2.d4#
- 1...Qxf1
- 2.d7#
- 1...Qxb8
- 2.Qf4#
- 1...d4
- 2.Rb5#
- 1...Qf2
- 2.d7#
- 1...Qf3
- 2.d7#
- 1...Qf4
- 2.Qxf4#
- 2.d7#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qe2#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(e);N_GUARD::B(H)+P(G)
- Q(e);OGATE::B(H)+P(G),XQ(e)
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- S(a);N_GUARD::QAR(F),XS(a)
- S(a);N_GUARD::QAR(F)
- Tries
- Try
- R(D);
- Threat
- P(B)
- Vars
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- S(a);N_GUARD::QAR(F),XS(a)
- S(a);N_GUARD::QAR(F)
- Refutation
- Q(e);
- Try
- R(D);
- Threat
- P(B)
- Vars
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- S(a);N_GUARD::QAR(F),XS(a)
- S(a);N_GUARD::QAR(F)
- Refutation
- Q(e);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- Q(e);N_GUARD::B(H)+P(G)
- Refutation
- Q(e);XB(H)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- Q(e);N_GUARD,XB(H)::QAB1(F)
- P(b);::QAB1(F),XP(b)
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- S(a);N_GUARD::QAR(F),XS(a)
- S(a);N_GUARD::QAR(F)
- Refutation
- P(b);XQ(F)
- Try
- Q(F);P_PINP(b)
- Threat
- R1(D)
- Vars
- Q(e);N_GUARD::B(H)+P(G)
- Refutation
- Q(e);XB(H)
- Try
- Q(F);P_PINP(b)
- Threat
- R1(D)
- Vars
- Q(e);N_GUARD::B(H)+P(G)
- Refutation
- Q(e);XB(H)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(F),XP(b)
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- Q(e);N_GUARD::B(H)+P(G)
- S(a);::QAR2(F)
- Refutation
- Q(e);XB(H)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(F),XP(b)
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- Q(e);N_GUARD::B(H)+P(G)
- S(a);::QAR2(F)
- Refutation
- Q(e);XB(H)
- Try
- P(G);CHECK
- Refutation
- Q(e);XB(H)
- Try
- Actual
- Q(F);
- Threat
- P(B)
- Vars
- Q(e);N_GUARD,XQ(F)::B(H)+P(G)
- Q(e);N_GUARD,XB(H)::QAB1(F)
- P(b);OGATEB,SBLOCK::R(D)
- Q(e);N_GUARD,P_PINP(B)::B(H)+P(G)
- Q(e);N_GUARD::B(H)+P(G)
- S(a);N_GUARD::QAR(F),XS(a)
- S(a);N_GUARD::QAR(F)
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