MESON Chess Problem Database
Problem Display
PID: 81287 (B7/8/2qp1p2/r3kP2/bR1N1pK1/1PN3p1/6r1/B2R3Q w - - 0 1)
Macleod, Norman Alasdair
Sahs, 1961
#2
10 + 9
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Qf3+
- 2.Sxf3#
- 1...Qb5
- 2.Sf3#
- 1...Qd7
- 2.Sf3#
- 1...Qe8
- 2.Sf3#
- 1...Qxc3
- 2.Sf3#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 1...Qa6
- 2.Sf3#
- 1...Qb6
- 2.Sf3#
- 1...Qc7
- 2.Sf3#
- 1...Qc8
- 2.Sf3#
- 1...Rb5
- 2.Sxc6#
- 1...Rd5
- 2.Sf3#
- 1...Bxb3
- 2.Sxc6#
- 1...Qf3+
- Tries
- 1.Sce2?
- threat
- 2.Sf3#
- 2.Sxc6#
- 1...Qf3+
- 2.Sxf3#
- 1...Ke4
- 2.Sc2#
- 1...Kd5
- 2.Se6#
- 1...Qxa8
- 2.Sc2#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Qe4
- 2.Sf3#
- 2.Sc6#
- 1...Qb5
- 2.Sc2#
- 2.Sf3#
- 2.Sxb5#
- 2.Sc6#
- 2.Se6#
- 1...Qd5
- 2.Sf3#
- 2.Sc6#
- 1...Qb7
- 2.Sc2#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Qd7
- 2.Sc2#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Qe8
- 2.Sc2#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sxc2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sc6#
- 1...Qa6
- 2.Sc2#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Qb6
- 2.Sf3#
- 2.Sc6#
- 1...Qc7
- 2.Sf3#
- 2.Sc6#
- 1...Qc8
- 2.Sf3#
- 2.Sc6#
- 1...f3
- 2.Sxf3#
- 2.Sxc6#
- 1...d5!
- threat
- 1.Sxa4?
- threat
- 2.Sf3#
- 2.Sxc6#
- 1...Qf3+
- 2.Sxf3#
- 1...Ke4
- 2.Sc2#
- 1...Kd5
- 2.Sc2#
- 2.Se2#
- 2.Sb5#
- 2.Sxc6#
- 2.Se6#
- 1...Qxa4
- 2.Sf3#
- 2.Sc6#
- 1...Qxa8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe4
- 2.Sf3#
- 2.Sc6#
- 1...Qb5
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd5
- 2.Sf3#
- 2.Sc6#
- 1...Qb7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sxc2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 2.Sc6#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sc6#
- 1...Qa6
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb6
- 2.Sf3#
- 2.Sc6#
- 1...Qc7
- 2.Sf3#
- 2.Sc6#
- 1...Qc8
- 2.Sf3#
- 2.Sc6#
- 1...Rb2
- 2.Sxc6#
- 1...Rd2
- 2.Sxc6#
- 1...f3
- 2.Sxf3#
- 2.Sxc6#
- 1...d5!
- threat
- 1.Se4?
- threat
- 2.Sf3#
- 2.Sxc6#
- 1...Kxe4
- 2.Sc2#
- 1...Kd5
- 2.Se2#
- 1...Qxe4
- 2.Sf3#
- 2.Sc6#
- 1...Qxa8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb5
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd5
- 2.Sf3#
- 2.Sc6#
- 1...Qb7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sxc2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sc6#
- 1...Qa6
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb6
- 2.Sf3#
- 2.Sc6#
- 1...Qc7
- 2.Sf3#
- 2.Sc6#
- 1...Qc8
- 2.Sf3#
- 2.Sc6#
- 1...Rb2
- 2.Sf3#
- 1...f3
- 2.Sxf3#
- 2.Sxc6#
- 1...Rd2!
- threat
- 1.Sd5?
- threat
- 2.Sf3#
- 2.Sxc6#
- 1...Ke4
- 2.Sxc6#
- 1...Kxd5
- 2.Se6#
- 1...Qxd5
- 2.Sf3#
- 2.Sc6#
- 1...Qxa8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb5
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sxc2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sc6#
- 1...Qa6
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb6
- 2.Sf3#
- 2.Sc6#
- 1...Qc7
- 2.Sf3#
- 2.Sc6#
- 1...Qc8
- 2.Sf3#
- 2.Sc6#
- 1...Rb2
- 2.Sf3#
- 1...Rd2
- 2.Sxc6#
- 1...f3
- 2.Sxf3#
- 2.Sxc6#
- 1...Qc4!
- threat
- 1.Bxc6?
- threat
- 2.Sf3#
- 1...Bxc6
- 2.Sxc6#
- 1...Rf2
- 2.Qe4#
- 1...f3
- 2.Sxf3#
- 1...d5!
- threat
- 1.Re1+?
- 1...Qe4
- 2.Sf3#
- 2.Rxe4#
- 1...Re2!
- 1...Qe4
- 1.Qe1+?
- 1...Qe4
- 2.Sf3#
- 2.Qxe4#
- 1...Re2!
- 1...Qe4
- 1.Sce2?
- Keys
- 1.Scb5!
- threat
- 2.Sf3#
- 2.Sxc6#
- 1...Qf3+
- 2.Sxf3#
- 1...Ke4
- 2.Sc2#
- 1...Kd5
- 2.Se6#
- 1...Qxb5
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qxa8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe4
- 2.Sf3#
- 2.Sc6#
- 1...Qd5
- 2.Sf3#
- 2.Sc6#
- 1...Qb7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qd7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qe8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sxc2#
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 2.Sc6#
- 1...Qc4
- 2.Sf3#
- 1...Qc5
- 2.Sf3#
- 2.Sc6#
- 1...Qa6
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 2.Sc6#
- 1...Qb6
- 2.Sf3#
- 2.Sc6#
- 1...Qc7
- 2.Sf3#
- 2.Sc6#
- 1...Qc8
- 2.Sf3#
- 2.Sc6#
- 1...Rb2
- 2.Sxc6#
- 1...Rd2
- 2.Sxc6#
- 1...f3
- 2.Sxf3#
- 2.Sxc6#
- threat
- 1.Scb5!
This is a version of 46639
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(g);CHECK,N_GUARD::S(G),XQ(g)
- Q(g);N_GUARD::S(G)
- Q(g);N_GUARD,P_PINP(I)::S(G)
- Q(g);N_GUARD,XS(E)::S(G)
- R(e);S_CUTB(c)::S(G),XQ(g)
- R(e);S_CUTQ(g)::S(G)
- B(c);N_GUARD,XP(D)::S(G),XQ(g)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK::B(A)+S(G),DCHECK,XQ(g)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a)::R(F)+S(G)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a)::R(B)+S(G)
- Q(g);::S(G)
- Q(g);::B(A)+S(G),DCHECK
- Refutation
- P(h);
- Try
- S(E);XB(c)
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK::B(A)+S(G),DCHECK,XQ(g)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a)::R(F)+S(G)
- Q(g);::B(A)+S(G),DCHECK
- R(a);::S(G),XQ(g)
- R(a);::B(A)+S(G),DCHECK,XQ(g)
- Refutation
- P(h);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a),XS(E)::R(F)+S(G)
- K(f);P-FLIGHT,P_SPINQ(g)::R(B)+S(G)
- Q(g);::S(G)
- Q(g);::B(A)+S(G),DCHECK
- R(a);::S(G)
- Refutation
- R(a);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT,P_SPINR(a)::R(F)+S(G),XQ(g)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a),XS(E)::R(B)+S(G)
- Q(g);::S(G)
- R(a);::S(G)
- R(a);::B(A)+S(G),DCHECK,XQ(g)
- Refutation
- Q(g);
- Try
- B(J);XQ(g)
- Threat
- S(G)
- Vars
- B(c);XB(J)::S(G),XB(c)
- R(a);OGATE::QAR1(C)
- P(d);::S(G),XP(d)
- Refutation
- P(h);
- Try
- R(B);CHECK
- Refutation
- R(a);P_SPINR(a)
- Try
- Q(C);CHECK
- Refutation
- R(a);P_SPINR(a)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK::B(A)+S(G),DCHECK,XQ(g)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a)::R(F)+S(G)
- K(f);P-FLIGHT,P_SPINQ(g),P_SPINR(a)::R(B)+S(G)
- Q(g);::B(A)+S(G),DCHECK
- R(a);::S(G),XQ(g)
- R(a);::B(A)+S(G),DCHECK,XQ(g)
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).