MESON Chess Problem Database
Problem Display
PID: 99403 (4R3/2BpPppB/QKP1k3/2P5/1N1p1RP1/1N5b/2r5/3r4 w - - 0 1)
Segers, Marcel
Sakkelet, 1992
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxd4#
- 1...Rb1
- 2.Sxd4#
- 1...Rdc1
- 2.Sxd4#
- 1...Re1
- 2.Sxd4#
- 1...Rf1
- 2.Sxd4#
- 1...Rg1
- 2.Sxd4#
- 1...Rh1
- 2.Sxd4#
- 1...Rcc1
- 2.Qe2#
- 1...Re2
- 2.Qxe2#
- 1...Rxc5
- 2.Sxc5#
- 1...d3
- 2.Sd4#
- 1...dxc6
- 2.Qc8#
- 1...d5
- 2.Qc8#
- 1...f6
- 2.Bg8#
- 1...Ra1
- Tries
- 1.Bg8?
- threat
- 2.Bxf7#
- 1...dxc6
- 2.Qc8#
- 1...d6!
- threat
- 1.Rf6+?
- 1...gxf6
- 2.Bf5#
- 1...Kxf6!
- 1...gxf6
- 1.Rf8?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Rxc5
- 2.e8Q#
- 2.e8R#
- 1...Bxg4
- 2.e8Q#
- 2.e8R#
- 1...d6
- 2.e8Q#
- 2.e8R#
- 1...Ra1
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.e8Q#
- 2.e8R#
- 1...Rdc1
- 2.e8Q#
- 2.e8R#
- 1...Re1
- 2.e8Q#
- 2.e8R#
- 1...Rf1
- 2.e8Q#
- 2.e8R#
- 1...Rg1
- 2.e8Q#
- 2.e8R#
- 1...Rh1
- 2.e8Q#
- 2.e8R#
- 1...Rdd2
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.e8Q#
- 2.e8R#
- 1...Rcc1
- 2.Qe2#
- 2.e8Q#
- 2.e8R#
- 1...Ra2
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.e8Q#
- 2.e8R#
- 1...Rcd2
- 2.e8Q#
- 2.e8R#
- 1...Re2
- 2.Qxe2#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.e8Q#
- 2.e8R#
- 1...Rg2
- 2.e8Q#
- 2.e8R#
- 1...Rh2
- 2.e8Q#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.e8Q#
- 2.e8R#
- 1...Bf1
- 2.e8Q#
- 2.e8R#
- 1...Bg2
- 2.e8Q#
- 2.e8R#
- 1...d3
- 2.e8Q#
- 2.e8R#
- 1...d5
- 2.e8Q#
- 2.e8R#
- 1...f5
- 2.e8Q#
- 2.e8R#
- 1...f6
- 2.Re4#
- 2.e8Q#
- 2.e8R#
- 1...g5
- 2.e8Q#
- 2.e8R#
- 1...g6
- 2.e8Q#
- 2.e8R#
- 1...Kxe7!
- threat
- 1.Qd3?
- threat
- 2.Sxd4#
- 2.Qe4#
- 2.Qf5#
- 1...Rxc5
- 2.Sxd4#
- 2.Sxc5#
- 1...Bxg4
- 2.Sxd4#
- 2.Qe4#
- 1...dxc6
- 2.Qf5#
- 1...d6
- 2.Qe4#
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 1...f6
- 2.Bg8#
- 1...Re1
- 2.Sxd4#
- 2.Qf5#
- 1...Re2
- 2.Sxd4#
- 2.Qxe2#
- 2.Qf5#
- 1...Rc4
- 2.Qe2#
- 2.Qe4#
- 2.Qf5#
- 1...Bg2
- 2.Sxd4#
- 2.Qf5#
- 1...d5
- 2.Sxd4#
- 2.Qf5#
- 1...g6
- 2.Sxd4#
- 2.Qe4#
- 1...Rxd3!
- threat
- 1.Qc4+?
- 1...d5
- 2.Qxd5#
- 1...Rxc4!
- 1...d5
- 1.Qc8?
- threat
- 2.Qxd7#
- 1...f6
- 2.Bg8#
- 1...f5!
- threat
- 1.Bg8?
- Keys
- 1.g5!
- threat
- 2.Re4#
- 1...Rxc5
- 2.Sxc5#
- 1...dxc6
- 2.Qc8#
- 1...f5
- 2.Bg8#
- 1...f6
- 2.Bg8#
- 1...Re1
- 2.Sxd4#
- 1...Re2
- 2.Qxe2#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...d5
- 2.Qc8#
- 1...g6
- 2.Rf6#
- threat
- 1.g5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::S(A),XP(d)
- R(b);N_GUARD::QAR(F)
- R(b);N_GUARD::QAR(F),XR(b)
- R(b);XP(E)::S(A),XR(b)
- P(d);S_CUTR(a)::S(A)
- P(f);OGATEB,XP(H)::QAB(F)
- P(f);OGATEB::QAB(F)
- P(g);OGATEB::B(K)
- Tries
- Try
- B(K);P_PINP(g)
- Threat
- B(K),XP(g)
- Vars
- P(f);OGATEB,XP(H)::QAB(F)
- Refutation
- P(f);
- Try
- R(C);CHECK
- Vars
- P(h);SBLOCK,XR(C)::B(K)
- Refutation
- K(e);P-FLIGHT,XR(C)
- Try
- R(L);
- Threat
- P=Q
- Vars
- R(b);XP(E)::P=Q
- B(c);XP(D)::P=Q
- P(f);::P=Q
- R(a);::P=Q
- R(b);::P=Q
- B(c);::P=Q
- P(d);::P=Q
- P(g);::P=Q
- P(h);::P=Q
- Refutation
- K(e);P-FLIGHT,XP(J)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- P(f);XP(H)::QAB1(F)
- P(g);::QAB1(F),XP(g)
- P(g);OGATEB::B(K)
- Refutation
- R(a);XQ(F)
- Try
- Q(F);CHECK
- Vars
- P(f);P_SPINP(f)::QAB1(F),XP(f)
- Refutation
- R(b);XQ(F)
- Try
- Q(F);P_PINP(f)
- Threat
- QAB1(F),XP(f)
- Vars
- P(g);OGATEB::B(K)
- Refutation
- P(g);
- Try
- Actual
- P(D);
- Threat
- R(C)
- Vars
- R(b);XP(E)::S(A),XR(b)
- P(f);OGATEB,XP(H)::QAB(F)
- P(g);OGATEB::B(K)
- R(a);N_GUARD::S(A),XP(d)
- R(b);N_GUARD::QAR(F),XR(b)
- B(c);N_GUARD::B(K)
- B(c);N_GUARD::B(K),XB(c)
- P(f);OGATEB::QAB(F)
- P(h);N_GUARD::R1(C)
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).