MESON Chess Problem Database
Problem Display
PID: 219136 (1K1n4/p2P4/Q2Bp3/3kN1R1/R2b4/8/2n2P2/1B6 w - - 0 1)
Jacobs, Herbert
The Field, 1883
(First published on Sat Jun 30 1883)
#2
9 + 6
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Ba2#
- 1...Bb2
- 2.Ba2#
- 1...Bxf2
- 2.Ba2#
- 1...Bc3
- 2.Ba2#
- 1...Be3
- 2.Ba2#
- 1...Bc5
- 2.Ba2#
- 1...Bxe5
- 2.Ba2#
- 2.Rxe5#
- 1...Sc6+
- 2.Qxc6#
- 1...Sb7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Ba1
- Tries
- 1.Sf3+?
- 1...Ke4
- 2.Sd2#
- 2.Qe2#
- 1...Be5
- 2.Ba2#
- 2.Rxe5#
- 1...e5!
- 1...Ke4
- 1.Sg4+?
- 1...Ke4
- 2.Qe2#
- 1...Be5
- 2.Sf6#
- 2.Ba2#
- 2.Rxe5#
- 1...e5!
- 1...Ke4
- 1.Sg6+?
- 1...Ke4
- 2.Qe2#
- 1...Be5
- 2.Sf4#
- 2.Se7#
- 2.Ba2#
- 2.Rxe5#
- 1...e5!
- 1...Ke4
- 1.Sf7+?
- 1...Ke4
- 2.Qe2#
- 1...Be5
- 2.Ba2#
- 2.Rxe5#
- 2.Qc4#
- 2.Qb5#
- 1...e5!
- 1...Ke4
- 1.Bxc2?
- 1...Sc6+
- 2.Qxc6#
- 1...Bxf2
- 2.Bb3#
- 2.Be4#
- 1...Bxe5
- 2.Bb3#
- 2.Be4#
- 2.Rxe5#
- 1...Ba1
- 2.Bb3#
- 2.Be4#
- 1...Bb2
- 2.Bb3#
- 2.Be4#
- 1...Bc3
- 2.Bb3#
- 2.Be4#
- 1...Be3
- 2.Bb3#
- 2.Be4#
- 1...Bc5
- 2.Bb3#
- 2.Be4#
- 1...Sb7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Bb6!
- 1...Sc6+
- 1.Bc7?
- 1...Sc6+
- 2.Qxc6#
- 1...Kc5
- 2.Sd3#
- 2.Qc4#
- 2.Qa5#
- 1...Bxf2
- 2.Qc4#
- 2.Qd6#
- 1...Bxe5
- 2.Rxe5#
- 2.Qc4#
- 2.Qb5#
- 2.Qd6#
- 1...Ba1
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bb2
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bc3
- 2.Qc4#
- 2.Qb5#
- 2.Qd6#
- 1...Be3
- 2.Qc4#
- 2.Qd6#
- 1...Bc5
- 2.Ba2#
- 2.Qc4#
- 1...Bb6
- 2.Qc4#
- 1...Sa1
- 2.Qc4#
- 2.Qd6#
- 1...Se1
- 2.Qc4#
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Qc4#
- 2.Qd6#
- 1...Sb7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Ke4!
- 1...Sc6+
- 1.Be7?
- 1...Bxe5+
- 2.Qd6#
- 1...Sc6+
- 2.Qxc6#
- 1...Bxf2
- 2.Ba2#
- 2.Qc4#
- 2.Qd6#
- 1...Ba1
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bb2
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bc3
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qd6#
- 1...Be3
- 2.Ba2#
- 2.Qc4#
- 2.Qd6#
- 1...Bc5
- 2.Ba2#
- 2.Qc4#
- 1...Bb6
- 2.Ba2#
- 2.Qc4#
- 1...Sa1
- 2.Qc4#
- 2.Qd6#
- 1...Se1
- 2.Qc4#
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Qc4#
- 2.Qd6#
- 1...Sb7
- 2.Qxb7#
- 2.Qc6#
- 1...Sf7
- 2.Qb7#
- 2.Qc6#
- 1...Ke4!
- 1...Bxe5+
- 1.Bf8?
- 1...Bxe5+
- 2.Qd6#
- 1...Sc6+
- 2.Qxc6#
- 1...Bxf2
- 2.Ba2#
- 2.Qc4#
- 2.Qd6#
- 1...Ba1
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bb2
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qa5#
- 2.Qd6#
- 1...Bc3
- 2.Ba2#
- 2.Qc4#
- 2.Qb5#
- 2.Qd6#
- 1...Be3
- 2.Ba2#
- 2.Qc4#
- 2.Qd6#
- 1...Bc5
- 2.Ba2#
- 2.Qc4#
- 1...Bb6
- 2.Ba2#
- 2.Qc4#
- 1...Sa1
- 2.Qc4#
- 2.Qd6#
- 1...Se1
- 2.Qc4#
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Qc4#
- 2.Qd6#
- 1...Sb7
- 2.Qxb7#
- 2.Qc6#
- 1...Sf7
- 2.Qb7#
- 2.Qc6#
- 1...Ke4!
- 1...Bxe5+
- 1.Rxd4+?
- 1...Kxd4
- 2.Qd3#
- 2.Qc4#
- 1...Sxd4!
- 1...Kxd4
- 1.Rg4?
- threat
- 2.Ba2#
- 1...Sc6+
- 2.Qxc6#
- 1...Sa1
- 2.Be4#
- 2.Raxd4#
- 2.Rgxd4#
- 1...Sa3
- 2.Be4#
- 2.Raxd4#
- 2.Rgxd4#
- 1...Se3
- 2.Be4#
- 2.Raxd4#
- 2.Rgxd4#
- 1...Sb4
- 2.Be4#
- 1...Bb6!
- threat
- 1.Qc4+?
- 1...Ke4
- 2.Qxd4#
- 1...Kxd6!
- 1...Ke4
- 1.f3?
- threat
- 2.Ba2#
- 1...Sc6+
- 2.Qxc6#
- 1...Sa1
- 2.Be4#
- 1...Sa3
- 2.Be4#
- 1...Se3
- 2.Be4#
- 1...Sb4
- 2.Be4#
- 1...Bb6!
- threat
- 1.Sf3+?
- Keys
- 1.Bc5!
- 1...Bxe5+
- 2.Qd6#
- 1...Sc6+
- 2.Qxc6#
- 1...Ke4
- 2.Rxd4#
- 1...Kxc5
- 2.Sd3#
- 1...Bxf2
- 2.Qc4#
- 2.Qd6#
- 1...Bxc5
- 2.Ba2#
- 1...Ba1
- 2.Qc4#
- 2.Qd6#
- 1...Bb2
- 2.Qc4#
- 2.Qd6#
- 1...Bc3
- 2.Qc4#
- 2.Qd6#
- 1...Be3
- 2.Qc4#
- 2.Qd6#
- 1...Sa1
- 2.Qc4#
- 2.Qd6#
- 1...Se1
- 2.Qc4#
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Qc4#
- 2.Qd6#
- 1...Sb7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Bxe5+
- 1.Bc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- B(b);::B(A)
- B(b);XP(B)::B(A)
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(f);N_GUARD::QAB1(F)
- Tries
- Try
- S(D);CHECK
- Refutation
- P(d);P_SPINP(d)
- Try
- S(D);CHECK
- Vars
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT::QAR2(F)
- Refutation
- P(d);P_SPINP(d)
- Try
- S(D);CHECK
- Vars
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT::QAR2(F)
- Refutation
- P(d);P_SPINP(d)
- Try
- S(D);CHECK
- Vars
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT::QAR2(F)
- Refutation
- P(d);P_SPINP(d)
- Try
- B(A);XS(a)
- Vars
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(f);N_GUARD::QAB1(F)
- Refutation
- B(b);
- Try
- B(G);
- Vars
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- B(b);::QAB1(F)
- S(a);::QAR1(F)
- S(f);N_GUARD::QAB1(F)
- Refutation
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT
- Try
- B(G);
- Vars
- B(b);CHECK,P_SPINB(b),XS(D)::QAR1(F)
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(a);::QAR1(F)
- Refutation
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT
- Try
- B(G);
- Vars
- B(b);CHECK,P_SPINB(b),XS(D)::QAR1(F)
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(a);::QAR1(F)
- Refutation
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT
- Try
- R(C);CHECK,XB(b)
- Refutation
- S(a);XR(C)
- Try
- R(E);
- Threat
- B(A)
- Vars
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(a);OGATE::B(A)
- Refutation
- B(b);
- Try
- Q(F);CHECK
- Vars
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT::QAR1(F),XB(b)
- Refutation
- K(c);P-FLIGHT,XB(G)
- Try
- P(B);
- Threat
- B(A)
- Vars
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- S(a);OGATE::B(A)
- Refutation
- B(b);
- Try
- Actual
- B(G);
- Vars
- B(b);CHECK,P_SPINB(b),XS(D)::QAR1(F)
- S(f);CHECK,N_GUARD::QAB1(F),XS(f)
- K(c);P_SPINB(b),P_SPINS(a),S_FLIGHT::R1(C),XB(b)
- K(c);P-FLIGHT,XB(G)::R(E)+S(D),DCHECK
- B(b);SBLOCK,XB(G)::B(A)
- S(a);::QAR1(F)
- S(f);N_GUARD::QAB1(F)
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).