MESON Chess Problem Database
Problem Display
PID: 204244 (1K6/4Qp1p/1B2bN2/PpN5/1pk2PRr/P3bR2/1P1p4/1B6 w - - 0 1)
Driver, John Edward
Correspondence Chess, 1961
#2
12 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Bd3#
- 2.b3#
- 1...Bxf4+
- 2.Rfxf4#
- 1...Bxc5
- 2.Qxc5#
- 1...Bd4
- Tries
- 1.Sb3?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Qc7#
- 1...Kxb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...bxa3!
- threat
- 1.Sd3?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Se5#
- 1...Kb3
- 2.Qxb4#
- 1...bxa3
- 2.Qb4#
- 1...b3
- 2.Se5#
- 2.Qb4#
- 1...Bc5!
- threat
- 1.Sa4?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Qc7#
- 1...Kb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...b3
- 2.Qb4#
- 1...bxa3!
- threat
- 1.Sce4?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Sd6#
- 1...Kb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...b3
- 2.Sd6#
- 2.Qb4#
- 1...bxa3!
- threat
- 1.Sxe6?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Qc7#
- 1...Kb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 2.b3#
- 1...b3
- 2.Qb4#
- 1...bxa3!
- threat
- 1.Sb7?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Sd6#
- 2.Qc7#
- 1...Kb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...b3
- 2.Sd6#
- 2.Qb4#
- 1...bxa3!
- threat
- 1.Scd7?
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Se5#
- 1...Kb3
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...b3
- 2.Se5#
- 2.Qb4#
- 1...bxa3!
- threat
- 1.Qxe6+?
- 1...Kd4
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sce4#
- 2.Sa6#
- 2.Sb7#
- 2.Scd7#
- 2.Qd5#
- 2.Qe4#
- 1...fxe6!
- 1...Kd4
- 1.b3+?
- 1...Kd4
- 2.Sa4#
- 2.Sce4#
- 1...Kc3!
- 1...Kd4
- 1.f5+?
- 1...Bd4
- 2.Bd3#
- 2.b3#
- 1...Bf4+
- 2.Rfxf4#
- 1...Rxg4!
- 1...Bd4
- 1.Sb3?
- Keys
- 1.Sa6!
- threat
- 2.Qxb4#
- 1...Bxf4+
- 2.Qc7#
- 1...Kb3
- 2.Qxb4#
- 1...bxa3
- 2.Qb4#
- 1...Bc5
- 2.Qxc5#
- 1...b3
- 2.Qb4#
- threat
- 1.Sa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(b);CHECK,OGATE,P_SPINB(b),XP(E)::R(D),XB(b)
- B(b);OGATE,XS(H)::QAR1(K),XB(b)
- Tries
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,N_GUARD,P_SPINB(b),XP(E)::QAR(K)
- K(d);P_SPINB(b),S_FLIGHT,XS(H)::QAR1(K),XP(c)
- B(b);N_GUARD::QAR1(K),XB(b)
- Refutation
- P(c);XP(C)
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,P_SPINB(b),XP(E)::S(H)
- K(d);S_FLIGHT::QAR1(K),XP(c)
- P(c);XP(C)::QAR1(K)
- Refutation
- B(b);
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,N_GUARD,P_SPINB(b),XP(E)::QAR(K)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- B(b);N_GUARD::QAR1(K),XB(b)
- P(c);::QAR1(K)
- Refutation
- P(c);XP(C)
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,XP(E)::S(H)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- B(b);N_GUARD::QAR1(K),XB(b)
- Refutation
- P(c);XP(C)
- Try
- S(H);XB(g)
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,N_GUARD,P_SPINB(b),XP(E)::QAR(K)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- P(c);::QAR1(K)
- Refutation
- P(c);XP(C)
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- B(b);N_GUARD::QAR1(K),XB(b)
- Refutation
- P(c);XP(C)
- Try
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,P_SPINB(b),XP(E)::S(H)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- B(b);N_GUARD::QAR1(K),XB(b)
- Refutation
- P(c);XP(C)
- Try
- Q(K);CHECK,XB(g)
- Refutation
- P(h);XQ(K)
- Try
- P(B);CHECK
- Refutation
- K(d);P-FLIGHT,P_SPINB(b)
- Try
- P(E);CHECK
- Vars
- B(b);CHECK,N_GUARD,P_SPINB(b)::R(D),XB(b)
- Refutation
- R(e);XR(F)
- Try
- Actual
- S(H);
- Threat
- QAR1(K),XP(c)
- Vars
- B(b);CHECK,N_GUARD,P_SPINB(b),XP(E)::QAR(K)
- K(d);P_SPINB(b),S_FLIGHT::QAR1(K),XP(c)
- P(c);XP(C)::QAR1(K)
- B(b);N_GUARD::QAR1(K),XB(b)
- P(c);::QAR1(K)
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).