MESON Chess Problem Database
Problem Display
PID: 146140 (KN1k3B/NPp1pB1P/3p4/3r2p1/p3r2p/8/2qQ4/8 w - - 0 1)
Lipton, Michael
The Problemist, 1952
#2
8 + 10
| 14867 | BCPS Library | 0000 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sac6#
- 1...Qd1
- 2.Sac6#
- 1...Qb3
- 2.Sac6#
- 1...Qd3
- 2.Sac6#
- 1...Qa2
- 2.Sac6#
- 1...Qb2
- 2.Sac6#
- 1...Qxd2
- 2.Sac6#
- 1...Qc6
- 2.Saxc6#
- 1...c5
- 2.Qa5#
- 1...e5
- 2.Bf6#
- 2.Qxg5#
- 1...e6
- 2.Bf6#
- 1...Qb1
- Tries
- 1.Sbc6+?
- 1...Kd7
- 2.b8S#
- 1...Qxc6!
- 1...Kd7
- 1.Be5?
- threat
- 2.h8Q#
- 2.h8R#
- 1...Qxd2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Rexe5
- 2.h8Q#
- 2.h8R#
- 1...Rxd2
- 2.h8Q#
- 2.h8R#
- 1...Rdxe5
- 2.h8Q#
- 2.h8R#
- 1...dxe5
- 2.Qxd5#
- 2.h8Q#
- 2.h8R#
- 1...c5
- 2.Qa5#
- 1...e6
- 2.Bf6#
- 2.Qxg5#
- 1...Qc3
- 2.h8Q#
- 2.h8R#
- 1...Qb1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc1
- 2.h8Q#
- 2.h8R#
- 1...Qa2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc4
- 2.h8Q#
- 2.h8R#
- 1...Qc5
- 2.h8Q#
- 2.h8R#
- 1...Qc6
- 2.Saxc6#
- 1...Re1
- 2.h8Q#
- 2.h8R#
- 1...Re2
- 2.h8Q#
- 2.h8R#
- 1...Re3
- 2.h8Q#
- 2.h8R#
- 1...Rb4
- 2.h8Q#
- 2.h8R#
- 1...Rc4
- 2.h8Q#
- 2.h8R#
- 1...Red4
- 2.h8Q#
- 2.h8R#
- 1...Rf4
- 2.h8Q#
- 2.h8R#
- 1...Rg4
- 2.h8Q#
- 2.h8R#
- 1...Rd3
- 2.h8Q#
- 2.h8R#
- 1...Rdd4
- 2.h8Q#
- 2.h8R#
- 1...Ra5
- 2.h8Q#
- 2.h8R#
- 1...Rb5
- 2.h8Q#
- 2.h8R#
- 1...Rc5
- 2.h8Q#
- 2.h8R#
- 1...a3
- 2.h8Q#
- 2.h8R#
- 1...h3
- 2.h8Q#
- 2.h8R#
- 1...g4
- 2.h8Q#
- 2.h8R#
- 1...c6!
- threat
- 1.Bg7?
- threat
- 2.h8Q#
- 2.h8R#
- 1...Qxd2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Rxd2
- 2.h8Q#
- 2.h8R#
- 1...c5
- 2.Qa5#
- 1...e5
- 2.Bf6#
- 2.Qxg5#
- 1...e6
- 2.Bf6#
- 1...Qc3
- 2.h8Q#
- 2.h8R#
- 1...Qb1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc1
- 2.h8Q#
- 2.h8R#
- 1...Qa2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc4
- 2.h8Q#
- 2.h8R#
- 1...Qc5
- 2.h8Q#
- 2.h8R#
- 1...Qc6
- 2.Saxc6#
- 1...Re1
- 2.h8Q#
- 2.h8R#
- 1...Re2
- 2.h8Q#
- 2.h8R#
- 1...Re3
- 2.h8Q#
- 2.h8R#
- 1...Rb4
- 2.h8Q#
- 2.h8R#
- 1...Rc4
- 2.h8Q#
- 2.h8R#
- 1...Red4
- 2.h8Q#
- 2.h8R#
- 1...Rf4
- 2.h8Q#
- 2.h8R#
- 1...Rg4
- 2.h8Q#
- 2.h8R#
- 1...Ree5
- 2.h8Q#
- 2.h8R#
- 1...Re6
- 2.h8Q#
- 2.h8R#
- 1...Rd3
- 2.h8Q#
- 2.h8R#
- 1...Rdd4
- 2.h8Q#
- 2.h8R#
- 1...Ra5
- 2.h8Q#
- 2.h8R#
- 1...Rb5
- 2.h8Q#
- 2.h8R#
- 1...Rc5
- 2.h8Q#
- 2.h8R#
- 1...Rde5
- 2.h8Q#
- 2.h8R#
- 1...Rf5
- 2.h8Q#
- 2.h8R#
- 1...a3
- 2.h8Q#
- 2.h8R#
- 1...h3
- 2.h8Q#
- 2.h8R#
- 1...g4
- 2.h8Q#
- 2.h8R#
- 1...c6!
- threat
- 1.Sbc6+?
- Keys
- 1.Bd4!
- threat
- 2.h8Q#
- 2.h8R#
- 1...Qxd2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Rexd4
- 2.h8Q#
- 2.h8R#
- 1...Rdxd4
- 2.h8Q#
- 2.h8R#
- 1...c5
- 2.Qa5#
- 1...c6
- 2.Bb6#
- 1...e5
- 2.Qxg5#
- 1...e6
- 2.Bf6#
- 1...Qc3
- 2.h8Q#
- 2.h8R#
- 1...Qb1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd1
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qd3
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc1
- 2.h8Q#
- 2.h8R#
- 1...Qa2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qb2
- 2.Sac6#
- 2.h8Q#
- 2.h8R#
- 1...Qc4
- 2.h8Q#
- 2.h8R#
- 1...Qc5
- 2.h8Q#
- 2.h8R#
- 1...Qc6
- 2.Saxc6#
- 1...Re1
- 2.h8Q#
- 2.h8R#
- 1...Re2
- 2.h8Q#
- 2.h8R#
- 1...Re3
- 2.h8Q#
- 2.h8R#
- 1...Rf4
- 2.h8Q#
- 2.h8R#
- 1...Rg4
- 2.h8Q#
- 2.h8R#
- 1...Ree5
- 2.h8Q#
- 2.h8R#
- 1...Re6
- 2.h8Q#
- 2.h8R#
- 1...Ra5
- 2.h8Q#
- 2.h8R#
- 1...Rb5
- 2.h8Q#
- 2.h8R#
- 1...Rc5
- 2.h8Q#
- 2.h8R#
- 1...Rde5
- 2.h8Q#
- 2.h8R#
- 1...Rf5
- 2.h8Q#
- 2.h8R#
- 1...a3
- 2.h8Q#
- 2.h8R#
- 1...h3
- 2.h8Q#
- 2.h8R#
- 1...g4
- 2.h8Q#
- 2.h8R#
- threat
- 1.Bd4!
This is a version of 145960
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::S(B)
- Q(a);N_GUARD,XQ(A)::S(B)
- Q(a);N_GUARD,P_PINP(C)::S(B),XQ(a)
- P(h);OGATEB::QAB(A)
- P(i);OGATEB::B(H)
- Tries
- Try
- S(G);CHECK
- Vars
- K(j);P-FLIGHT::P=S
- Refutation
- Q(a);P_PINP(C),XS(G)
- Try
- B(H);
- Threat
- P=Q
- Vars
- R(c);XB(H)::P=Q
- R(e);XQ(A)::P=Q
- R(e);P_SPINP(g),XB(H)::P=Q
- P(h);OGATEB::QAB(A)
- Q(a);::P=Q
- Q(a);N_GUARD,P_PINP(C)::S(B),XQ(a)
- R(c);::P=Q
- R(e);::P=Q
- R(e);P_PINS(B),P_SPINP(g)::P=Q
- R(e);P_SPINP(g)::P=Q
- P(b);::P=Q
- P(d);::P=Q
- P(f);::P=Q
- Refutation
- P(h);
- Try
- B(H);
- Threat
- P=Q
- Vars
- R(e);XQ(A)::P=Q
- P(h);OGATEB::QAB(A)
- P(i);OGATEB::B(H)
- Q(a);::P=Q
- Q(a);N_GUARD,P_PINP(C)::S(B),XQ(a)
- R(c);::P=Q
- R(e);::P=Q
- R(e);P_PINS(B),P_SPINP(g)::P=Q
- R(e);P_SPINP(g)::P=Q
- P(b);::P=Q
- P(d);::P=Q
- P(f);::P=Q
- Refutation
- P(h);
- Try
- Actual
- B(H);
- Threat
- P=Q
- Vars
- R(c);XB(H)::P=Q
- R(e);XB(H)::P=Q
- P(h);OGATEB::QAB(A)
- P(h);OGATEB::B(H)
- P(i);OGATEB::QAB(A),XP(f)
- P(i);OGATEB::B(H)
- Q(a);::P=Q
- Q(a);N_GUARD,P_PINP(C)::S(B),XQ(a)
- R(c);::P=Q
- R(e);P_PINS(B)::P=Q
- R(e);::P=Q
- P(b);::P=Q
- P(d);::P=Q
- P(f);::P=Q
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).