MESON Chess Problem Database
Problem Display
PID: 20955 (6b1/3B2N1/4P1p1/8/6kB/8/K6Q/6Nn w - - 0 1)
Bonner Feast, Frederick
Hampstead Express, 1914
#2
7 + 4
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
| 3310 | 2345 Chess Problems | 1997 |
| 5454 | Near Snap | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Bxe6+
- 2.Bxe6#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Bxe6+
- Tries
- 1.Ka1?
- 1...Bxe6
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6
- 1.Kb1?
- 1...Bxe6
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6
- 1.Kb2?
- 1...Bxe6
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6
- 1.Ka3?
- 1...Bxe6
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6
- 1.Kb3?
- 1...Bxe6+
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6+
- 1.Bf6?
- threat
- 2.Qh4#
- 1...Bxe6+
- 2.Bxe6#
- 1...g5!
- threat
- 1.Be7?
- threat
- 2.Qh4#
- 1...Bxe6+
- 2.Bxe6#
- 1...g5!
- threat
- 1.Bd8?
- threat
- 2.Qh4#
- 1...Bxe6+
- 2.Bxe6#
- 1...g5!
- threat
- 1.Ba4?
- threat
- 2.Bd1#
- 1...Sg3
- 2.Qxg3#
- 1...Sf2
- 2.Qg3#
- 1...Bxe6+!
- threat
- 1.Bb5?
- threat
- 2.Be2#
- 1...Sg3
- 2.Qxg3#
- 1...Bxe6+!
- threat
- 1.Bc6?
- threat
- 2.Bf3#
- 1...Sg3
- 2.Qxg3#
- 1...Bxe6+!
- threat
- 1.Bc8?
- 1...Bxe6+
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Bf7
- 2.exf7#
- 1...Bh7
- 2.e7#
- 1...Sf2
- 2.Qg3#
- 1...g5!
- 1...Bxe6+
- 1.Qe5?
- threat
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 1...Kxh4
- 2.Qf4#
- 1...g5
- 2.Qd4#
- 2.Qe4#
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 2.Qg5#
- 1...Sg3
- 2.Qxg3#
- 2.Qg5#
- 1...Bxe6+!
- threat
- 1.Qd6?
- threat
- 2.Qb4#
- 2.Qd4#
- 1...Kxh4
- 2.Qf4#
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Bxe6+!
- threat
- 1.Qb8?
- threat
- 2.Qb4#
- 1...Kxh4
- 2.Qf4#
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Bxe6+!
- threat
- 1.Qd2?
- threat
- 2.Qb4#
- 2.Qg5#
- 2.Qd4#
- 1...Kxh4
- 2.Qf4#
- 1...g5
- 2.Qb4#
- 2.Qxg5#
- 2.Qd4#
- 1...Sf2
- 2.Qg5#
- 1...Sg3
- 2.Qg5#
- 1...Bxe6+!
- threat
- 1.Qe2+?
- 1...Kf4
- 2.Sh3#
- 1...Kxh4!
- 1...Kf4
- 1.Qf2?
- threat
- 2.Qd4#
- 1...Bxe6+
- 2.Bxe6#
- 1...Sg3
- 2.Qxg3#
- 1...Sxf2!
- threat
- 1.Qg2+?
- 1...Kxh4
- 2.Sf3#
- 1...Sg3
- 2.Qxg3#
- 1...Kf4!
- 1...Kxh4
- 1.Ka1?
- Keys
- 1.Qc7!
- threat
- 2.Qc4#
- 1...Kxh4
- 2.Qf4#
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- threat
- 1.Qc7!
This anticipates 21999(1923), 162437(2010)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- B(d);::B(F)+P(E),XB(d)
- B(d);N_PINP(E)::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Tries
- Try
- K(B);N_SPINP(E),P-FLIGHT
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);OGATE::B(F)+P(E),XB(d)
- B(d);N_GUARD::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- K(B);N_SPINP(E),S_FLIGHT
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);OGATE::B(F)+P(E),XB(d)
- B(d);N_GUARD::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- K(B);N_SPINP(E),P-FLIGHT
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);OGATE::B(F)+P(E),XB(d)
- B(d);N_GUARD::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- K(B);N_SPINP(E),P-FLIGHT
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);OGATE::B(F)+P(E),XB(d)
- B(d);N_GUARD::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- K(B);S_FLIGHT
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);::B(F)+P(E),XB(d)
- B(d);N_PINP(E)::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- QAR1(C)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- QAR1(C)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- Refutation
- P(c);
- Try
- B(D);
- Threat
- QAR1(C)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- Refutation
- P(c);
- Try
- B(F);
- Threat
- B(F)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD::QAR1(C)
- Refutation
- B(d);CHECK,XP(E)
- Try
- B(F);
- Threat
- B(F)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- B(d);CHECK,XP(E)
- Try
- B(F);
- Threat
- B(F)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- B(d);CHECK,XP(E)
- Try
- B(F);
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(d);::B(F)+P(E),XB(d)
- B(d);N_PINP(E)::B(F)+P(E)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(c);
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(C)
- Refutation
- B(d);CHECK,P_SPINB(d),XP(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- B(d);CHECK,P_SPINB(d),XP(E)
- Try
- Q(C);
- Threat
- QAR(C)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- B(d);CHECK,P_SPINB(d),XP(E)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(C)
- S(a);::QAR1(C)
- Refutation
- B(d);CHECK,P_SPINB(d),XP(E)
- Try
- Q(C);CHECK
- Vars
- K(b);P-FLIGHT::S(A)
- Refutation
- K(b);P-FLIGHT,XB(D)
- Try
- Q(C);
- Threat
- QAR(C)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(E)::B(F),XB(d)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);CHECK
- Vars
- K(b);P-FLIGHT,XB(D)::S(A)
- S(a);N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(C);
- Threat
- QAR(C)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
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).