MESON Chess Problem Database
Problem Display
PID: 238319 (n3R3/1Q1N1p1p/2RppK2/3pPN2/p1B1kP2/4B1P1/6P1/5r2 w - - 0 1)
Segers, Marcel
Pat a Mat, 1991
#2
12 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qxb1#
- 1...Rf3
- 2.Qb1#
- 1...Rxf4
- 2.Qb1#
- 1...dxc4
- 2.Rxd6#
- 1...d4
- 2.Rxd6#
- 1...dxe5
- 2.Sc5#
- 1...exf5
- 2.exd6#
- 1...Rb1
- Tries
- 1.Kg5?
- threat
- 2.Sf6#
- 1...f6+
- 2.Sxf6#
- 1...Rxf4
- 2.Qb1#
- 1...dxc4
- 2.Rxd6#
- 1...exf5
- 2.exd6#
- 1...h6+!
- threat
- 1.Bf2?
- threat
- 2.Sxd6#
- 1...dxc4
- 2.Rxd6#
- 1...dxe5
- 2.Sd6#
- 2.Sc5#
- 1...exf5
- 2.exd6#
- 1...Rxf2!
- threat
- 1.Ba7?
- threat
- 2.Sxd6#
- 1...Rxf4
- 2.Qb1#
- 1...dxc4
- 2.Rxd6#
- 1...dxe5
- 2.Sd6#
- 2.Sc5#
- 1...exf5
- 2.exd6#
- 1...d4
- 2.Rxd6#
- 1...Sb6!
- threat
- 1.Bxf1?
- threat
- 2.Rc4#
- 2.Qb1#
- 1...exf5
- 2.exd6#
- 1...d4
- 2.Rxd6#
- 1...Sb6!
- threat
- 1.Bxd5+?
- 1...Kd3
- 2.Qa6#
- 2.Qb5#
- 1...Kxd5
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...exd5!
- 1...Kd3
- 1.Qb2?
- threat
- 2.Qd4#
- 2.Qc2#
- 1...dxc4
- 2.Qd4#
- 1...dxe5
- 2.Sc5#
- 2.Qxe5#
- 2.Qc2#
- 1...exf5
- 2.Qd4#
- 2.exd6#
- 1...Rc1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Rd1!
- threat
- 1.Qb3?
- threat
- 2.Sxd6#
- 2.Bd3#
- 2.Qc2#
- 2.Qd3#
- 1...Rxf4
- 2.Bd3#
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...dxc4
- 2.Qxc4#
- 1...dxe5
- 2.Sd6#
- 2.Sc5#
- 2.Bd3#
- 2.Qc2#
- 2.Qd3#
- 1...exf5
- 2.Bxd5#
- 2.Qd3#
- 2.exd6#
- 1...Rc1
- 2.Sxd6#
- 2.Bd3#
- 2.Qd3#
- 1...Rd1
- 2.Sxd6#
- 1...Rf2
- 2.Sxd6#
- 2.Bd3#
- 2.Qd3#
- 1...d4
- 2.Sxd6#
- 2.Bd3#
- 2.Qd3#
- 1...axb3!
- threat
- 1.Qb5?
- threat
- 2.Bd3#
- 1...dxc4
- 2.Qxc4#
- 1...exf5
- 2.exd6#
- 1...Rd1!
- threat
- 1.Qb6?
- threat
- 2.Sxd6#
- 2.Qd4#
- 1...Rxf4
- 2.Qd4#
- 2.Qb1#
- 1...dxc4
- 2.Qd4#
- 1...dxe5
- 2.Sd6#
- 2.Sc5#
- 1...exf5
- 2.Qd4#
- 2.exd6#
- 1...Rd1
- 2.Sxd6#
- 1...d4
- 2.Qxd4#
- 1...Sxb6!
- threat
- 1.Qa7?
- threat
- 2.Sxd6#
- 2.Qd4#
- 1...Rxf4
- 2.Qd4#
- 1...dxc4
- 2.Qd4#
- 1...dxe5
- 2.Sd6#
- 2.Sc5#
- 1...exf5
- 2.Qd4#
- 2.exd6#
- 1...Rd1
- 2.Sxd6#
- 1...d4
- 2.Qxd4#
- 1...Sb6!
- threat
- 1.Kg5?
- Keys
- 1.Bc5!
- threat
- 2.Sxd6#
- 1...Rxf4
- 2.Qb1#
- 1...dxc4
- 2.Rxd6#
- 1...dxc5
- 2.Sxc5#
- 1...dxe5
- 2.Sd6#
- 1...exf5
- 2.exd6#
- 1...d4
- 2.Rxd6#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::QAB(J),XR(a)
- R(a);N_GUARD::QAB(J)
- R(a);N_GUARD,P_PINS(G),XP(E)::QAB(J)
- P(d);OGATEB,XB(D)::QAB(J)+R(H),XP(e)
- P(d);OGATEB::QAB(J)+R(H),XP(e)
- P(e);N_GUARD,XP(F)::S(K)
- P(f);XS(G)::R(L)+P(F),XP(e)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- S(K)
- Vars
- P(g);CHECK::S(K),XP(g)
- R(a);N_GUARD,XP(E)::QAB(J)
- P(d);OGATEB,XB(D)::QAB(J)+R(H),XP(e)
- P(f);XS(G)::R(L)+P(F),XP(e)
- Refutation
- P(h);CHECK
- Try
- B(B);
- Threat
- S(G),XP(e)
- Vars
- P(d);OGATEB,XB(D)::QAB(J)+R(H),XP(e)
- P(f);XS(G)::R(L)+P(F),XP(e)
- Refutation
- R(a);XB(B)
- Try
- B(B);
- Threat
- S(G),XP(e)
- Vars
- R(a);N_GUARD,P_PINS(G),XP(E)::QAB(J)
- P(d);OGATEB,XB(D)::QAB(J)+R(H),XP(e)
- P(f);XS(G)::R(L)+P(F),XP(e)
- P(d);OGATEB::QAB(J)+R(H),XP(e)
- Refutation
- S(i);
- Try
- B(D);XR(a)
- Threat
- DUALS(2)
- Vars
- P(f);XS(G)::R(L)+P(F),XP(e)
- P(d);OGATEB::QAB(J)+R(H),XP(e)
- Refutation
- S(i);
- Try
- B(D);CHECK,XP(d)
- Refutation
- P(f);XB(D)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- P(d);XB(D)::QAR1(J)
- R(a);::QAR1(J)
- P(d);::QAR1(J),XP(d)
- Refutation
- R(a);
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- P(d);OGATE,XB(D)::QAR2(J),XP(d)
- R(a);::S(G),XP(e)
- Refutation
- P(b);XQ(J)
- Try
- Q(J);
- Threat
- B(D)
- Vars
- P(d);OGATE,XB(D)::QAR2(J),XP(d)
- P(f);XS(G)::R(L)+P(F),XP(e)
- Refutation
- R(a);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- P(d);XB(D)::QAR1(J)
- R(a);::S(G),XP(e)
- P(d);::QAR1(J),XP(d)
- Refutation
- S(i);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(a);P_PINS(G),XP(E)::QAR1(J)
- P(d);XB(D)::QAR1(J)
- R(a);::S(G),XP(e)
- P(d);::QAR1(J),XP(d)
- Refutation
- S(i);
- Try
- Actual
- B(B);
- Threat
- S(G),XP(e)
- Vars
- R(a);N_GUARD,P_PINS(G),XP(E)::QAB(J)
- P(d);OGATEB,XB(D)::QAB(J)+R(H),XP(e)
- P(e);XB(B)::S(K),XP(e)
- P(e);XP(F)::S(G)
- P(f);XS(G)::R(L)+P(F),XP(e)
- P(d);OGATEB::QAB(J)+R(H),XP(e)
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).