MESON Chess Problem Database
Problem Display
PID: 4700 (1N6/n1p5/3p1N2/pqkB4/P2b4/P3R3/3R4/6BK w - - 0 1)
Tolosa y Carreras, Jose
La Strategie, 1887
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sbd7#
- 1...Qe2
- 2.Sbd7#
- 1...Qd3
- 2.Sbd7#
- 1...Qc4
- 2.Sbd7#
- 1...Qa6
- 2.Sbd7#
- 1...Qd7
- 2.Sbxd7#
- 1...Qb1
- 2.Sbd7#
- 1...Qb2
- 2.Sbd7#
- 1...Qb3
- 2.Sbd7#
- 1...Qb4
- 2.Sbd7#
- 1...Qb6
- 2.Sbd7#
- 2.Rc3#
- 1...Qb7
- 2.Sbd7#
- 1...Ba1
- 2.Rc3#
- 1...Bb2
- 2.Rc3#
- 1...Bc3
- 2.Rxc3#
- 1...Bxe3
- 2.Bxe3#
- 1...Be5
- 2.Rc3#
- 2.Rxe5#
- 1...Bxf6
- 2.Rc3#
- 2.Re5#
- 1...Sc6
- 2.Sbd7#
- 1...c6
- 2.Sbd7#
- 1...Qf1
- Tries
- 1.Rc2+?
- 1...Qc4
- 2.Sbd7#
- 1...Bc3
- 2.Re1#
- 2.Ree2#
- 2.Rexc3#
- 2.Rd3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Re4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Kb6!
- 1...Qc4
- 1.Rb3?
- threat
- 2.Bxd4#
- 1...Kb6
- 2.Sfd7#
- 1...Qxa4
- 2.Sa6#
- 1...Qf1
- 2.Sbd7#
- 1...Qd3
- 2.Sbd7#
- 1...Qc4
- 2.Sbd7#
- 1...Qb4
- 2.Sbd7#
- 1...Bf2
- 2.Bxf2#
- 1...Be3
- 2.Bxe3#
- 1...Sc6
- 2.Sbd7#
- 2.Rxb5#
- 1...Bxg1!
- threat
- 1.Rc3+?
- 1...Qc4
- 2.Sbd7#
- 2.Bxd4#
- 1...Kb6!
- 1...Qc4
- 1.Rc2+?
- Keys
- 1.Rb2!
- 1...Kb6
- 2.Sfd7#
- 1...Qxa4
- 2.Sa6#
- 1...Qxb2
- 2.Sbd7#
- 1...Qxb8
- 2.Rc3#
- 1...Bxb2
- 2.Rc3#
- 1...Bxe3
- 2.Bxe3#
- 1...Bxf6
- 2.Re5#
- 1...Bc3
- 2.Rxc3#
- 1...Be5
- 2.Rc3#
- 2.Rxe5#
- 1...Qf1
- 2.Sbd7#
- 1...Qe2
- 2.Sbd7#
- 1...Qd3
- 2.Sbd7#
- 1...Qc4
- 2.Sbd7#
- 1...Qa6
- 2.Sxa6#
- 2.Sbd7#
- 1...Qc6
- 2.Rc3#
- 1...Qd7
- 2.Sa6#
- 2.Sbxd7#
- 2.Rc3#
- 1...Qe8
- 2.Sa6#
- 2.Rc3#
- 1...Qb3
- 2.Sbd7#
- 1...Qb4
- 2.Sbd7#
- 1...Qb6
- 2.Sbd7#
- 2.Rc3#
- 1...Qb7
- 2.Sbd7#
- 2.Rc3#
- 1...Sc6
- 2.Sbd7#
- 2.Rxb5#
- 1...Sc8
- 2.Rxb5#
- 1...c6
- 2.Sbd7#
- 1...Kb6
- 1.Rb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 6
- Sets
- Q(c);N_GUARD,P_PINB(A)::S(I)
- Q(c);N_GUARD::S(I)
- Q(c);N_GUARD::S(I),XQ(c)
- Q(c);N_GUARD,P_PINB(G)::S(I)
- B(a);::B(A)+R(E),DCHECK
- B(a);::B(A)+R(E),DCHECK,XB(a)
- B(a);OGATE,P_SPINB(a),XR(E)::B(A),XB(a)
- S(f);S_CUTQ(c)::S(I)
- P(g);S_CUTQ(c)::S(I)
- Tries
- Try
- R(C);CHECK
- Vars
- Q(c);P_SPINQ(c)::S(I)
- Refutation
- K(d);S_FLIGHT
- Try
- R(E);P_PINB(a)
- Threat
- B(A),XB(a)
- Vars
- K(d);P_SPINQ(c),S_FLIGHT::S(H)
- Q(c);N_GUARD,XP(F)::S(I)
- Q(c);N_GUARD,P_PINB(A)::S(I)
- Q(c);N_GUARD::S(I)
- B(a);OGATEB::B(A),XB(a)
- Refutation
- B(a);N_SPINB(a),XB(A)
- Try
- R(E);CHECK,P_PINB(a)
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- R(C);
- Vars
- K(d);P_SPINQ(c),S_FLIGHT::S(H)
- Q(c);N_GUARD,XP(F)::S(I)
- Q(c);N_GUARD,XR(C)::S(I)
- Q(c);N_GUARD,XS(I)::R(E)
- B(a);XR(C)::B(A)+R(E),DCHECK
- B(a);OGATE,P_SPINB(a),XR(E)::B(A),XB(a)
- B(a);OGATEB,XS(H)::B(A)+R(E)
- B(a);::B(A)+R(E),DCHECK,XB(a)
- Q(c);N_GUARD,P_PINB(A)::S(I)
- Q(c);N_GUARD::S(I)
- Q(c);N_GUARD,P_PINB(G)::R(E)
- S(f);N_GUARD::R1(C),XQ(c)
- P(g);S_CUTQ(c)::S(I)
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).