MESON Chess Problem Database
Problem Display
PID: 99359 (Q1BR4/rq2P1Kp/p6P/2P3pR/2p1kNPb/4Pp2/1n3P2/B7 w - - 0 1)
Prins, Hendrik
Magyar Sakkelet, 1984
#2
13 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Qxd5#
- 1...Sd1
- 2.Bf5#
- 1...Sd3
- 2.Bf5#
- 1...Sa4
- 2.Bf5#
- 1...gxf4
- 2.Rd4#
- 1...Qd5
- Tries
- 1.Kf6?
- threat
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Qc6+
- 2.Qxc6#
- 1...Qxa8
- 2.Bf5#
- 2.Rd4#
- 1...Rxa8
- 2.Bf5#
- 2.Bxb7#
- 2.Rd4#
- 1...Qd5
- 2.Bf5#
- 2.Qxd5#
- 1...Bg3
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Sd1
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Sd3
- 2.Bf5#
- 2.Rd4#
- 1...Sa4
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...c3
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...a5
- 2.Bf5#
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...gxf4+!
- threat
- 1.Bxb7+?
- 1...Ke5
- 2.Qb8#
- 2.e8Q#
- 2.e8R#
- 1...Rxb7!
- 1...Ke5
- 1.Bd7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Ke5
- 2.e8Q#
- 2.e8R#
- 1...Qxa8
- 2.e8Q#
- 2.e8R#
- 1...Rxa8
- 2.e8Q#
- 2.e8R#
- 1...Bxf2
- 2.e8Q#
- 2.e8R#
- 1...Qd5
- 2.Qxd5#
- 2.e8Q#
- 2.e8R#
- 1...Qc6
- 2.e8Q#
- 2.e8R#
- 1...Bg3
- 2.e8Q#
- 2.e8R#
- 1...Sd1
- 2.Bf5#
- 2.e8Q#
- 2.e8R#
- 1...Sd3
- 2.Bf5#
- 1...Sa4
- 2.Bf5#
- 2.e8Q#
- 2.e8R#
- 1...c3
- 2.e8Q#
- 2.e8R#
- 1...a5
- 2.e8Q#
- 2.e8R#
- 1...gxf4!
- threat
- 1.Rd7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Ke5
- 2.e8Q#
- 2.e8R#
- 1...Qxa8
- 2.e8Q#
- 2.e8R#
- 1...Rxa8
- 2.e8Q#
- 2.e8R#
- 1...Bxf2
- 2.e8Q#
- 2.e8R#
- 1...gxf4
- 2.Rd4#
- 1...Qd5
- 2.Qxd5#
- 2.e8Q#
- 2.e8R#
- 1...Qc6
- 2.e8Q#
- 2.e8R#
- 1...Bg3
- 2.e8Q#
- 2.e8R#
- 1...Sd1
- 2.e8Q#
- 2.e8R#
- 1...Sa4
- 2.e8Q#
- 2.e8R#
- 1...c3
- 2.e8Q#
- 2.e8R#
- 1...a5
- 2.e8Q#
- 2.e8R#
- 1...Sd3!
- threat
- 1.Qxb7+?
- 1...Ke5
- 2.Qd5#
- 2.e8Q#
- 2.e8R#
- 1...Rxb7!
- 1...Ke5
- 1.Kf6?
- Keys
- 1.Rd6!
- threat
- 2.Re6#
- 1...Ke5
- 2.Re6#
- 1...gxf4
- 2.Rd4#
- 1...Sd3
- 2.Bf5#
- threat
- 1.Rd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(i);OGATE::QAB1(K),XQ(i)
- S(a);::B(L)
- P(f);XS(D)::R1(M)
- Tries
- Try
- K(J);N_SPINP(I),S_FLIGHT
- Threat
- DUALS(4)
- Vars
- Q(i);CHECK,OGATE::QAB(K),XQ(i)
- Refutation
- P(f);CHECK,XS(D)
- Try
- B(L);CHECK,N_SPINP(I),XQ(i)
- Refutation
- R(h);P_PINP(I),P_SPINR(h),XB(L)
- Try
- B(L);N_SPINP(I)
- Threat
- P=Q
- Vars
- K(d);N_SPINQ(i),P-FLIGHT,P_SPINP(f),P_SPINS(a)::P=Q
- Q(i);N_SPINQ(i),XQ(K)::P=Q
- R(h);N_SPINQ(i),XQ(K)::P=Q
- B(e);XP(B)::P=Q
- Q(i);::P=Q
- B(e);::P=Q
- S(a);::B(L)
- P(c);::P=Q
- P(g);::P=Q
- Refutation
- P(f);XS(D)
- Try
- R(M);N_SPINP(I)
- Threat
- P=Q
- Vars
- K(d);N_SPINQ(i),P-FLIGHT,P_SPINP(f),P_SPINS(a)::P=Q
- Q(i);N_SPINQ(i),XQ(K)::P=Q
- R(h);N_SPINQ(i),XQ(K)::P=Q
- B(e);XP(B)::P=Q
- P(f);XS(D)::R1(M)
- Q(i);::P=Q
- B(e);::P=Q
- S(a);::P=Q
- P(c);::P=Q
- P(g);::P=Q
- Refutation
- S(a);
- Try
- Q(K);CHECK,N_SPINP(I),XQ(i)
- Refutation
- R(h);P_PINP(I),XQ(K)
- Try
- Actual
- R(M);
- Threat
- R(M)
- Vars
- K(d);N_SPINQ(i),P-FLIGHT,P_SPINP(f),P_SPINS(a)::R1(M)
- P(f);XS(D)::R1(M)
- S(a);::B(L)
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).