MESON Chess Problem Database
Problem Display
PID: 99155 (1r6/B2P1R1p/bNpp4/4k2r/1pQ2N2/6Pn/3P4/1Bn2Kb1 w - - 0 1)
Groeneveld, Cornelis
Magyar Sakkelet, 1990
#2
10 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rh4
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Rh6
- 2.Rf5#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bh2
- 2.d4#
- 1...Bxc4+
- 2.Sxc4#
- 1...Bb7
- 2.Qe4#
- 1...Bc8
- 2.Qe4#
- 1...Sa2
- 2.Sd3#
- 1...Se2
- 2.Sd3#
- 2.Qe4#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sf2
- 2.d4#
- 1...Sxf4
- 2.gxf4#
- 1...Sg5
- 2.Rf5#
- 1...d5
- 2.Bxb8#
- 1...h6
- 2.Sg6#
- 1...Rh4
- Tries
- 1.Ke1?
- threat
- 2.Qe4#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxc4
- 2.Sxc4#
- 1...d5
- 2.Bxb8#
- 1...Bd4
- 2.Qe6#
- 1...Sf2
- 2.d4#
- 1...Sg5
- 2.Rf5#
- 1...Bf2+!
- threat
- 1.Bd3?
- threat
- 2.Qe4#
- 1...Bxc4
- 2.Sxc4#
- 1...Sxd3
- 2.Sxd3#
- 1...d5
- 2.Bxb8#
- 1...Bd4
- 2.Qe6#
- 1...Sg5
- 2.Rf5#
- 1...Sf2!
- threat
- 1.d3?
- threat
- 2.Qe4#
- 1...Bxc4
- 2.Sxc4#
- 1...Sxd3
- 2.Sxd3#
- 1...d5
- 2.Bxb8#
- 1...Bd4
- 2.Qe6#
- 1...Sf2
- 2.d4#
- 1...Sg5!
- threat
- 1.d8Q?
- threat
- 2.Sd7#
- 2.Qf6#
- 2.Qe7#
- 1...Bxc4+
- 2.Sxc4#
- 1...Rxb6
- 2.Qf6#
- 2.Qe7#
- 2.Qe8#
- 2.Qh8#
- 1...Bxb6
- 2.Qf6#
- 2.Qe7#
- 1...Sxf4
- 2.Sd7#
- 2.Qf6#
- 2.gxf4#
- 1...Rf5
- 2.Sd7#
- 2.Rxf5#
- 2.Qe7#
- 1...Rh6
- 2.Sd7#
- 2.Rf5#
- 1...Rb7
- 2.Qf6#
- 2.Qh8#
- 1...Bc8
- 2.Qf6#
- 2.Qe4#
- 2.Qh8#
- 1...Sg5
- 2.Sd7#
- 2.Rf5#
- 2.Qf6#
- 1...d5
- 2.Bxb8#
- 2.Qf6#
- 2.Qc7#
- 2.Qe7#
- 2.Qxb8#
- 1...Rxd8!
- threat
- 1.d8B?
- threat
- 2.Sd7#
- 2.Bf6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Rxb6
- 2.Bf6#
- 1...Bxb6
- 2.Bf6#
- 1...d5
- 2.Bxb8#
- 2.Bc7#
- 1...Rf5
- 2.Sd7#
- 2.Rxf5#
- 1...Rh6
- 2.Sd7#
- 2.Rf5#
- 1...Rb7
- 2.Bf6#
- 1...Bc8
- 2.Bf6#
- 2.Qe4#
- 1...Sd3
- 2.Sxd3#
- 2.Sd7#
- 1...Rxd8!
- threat
- 1.Ke1?
- Keys
- 1.Kg2!
- threat
- 2.Qe4#
- 1...Sxf4+
- 2.gxf4#
- 1...Bxc4
- 2.Sxc4#
- 1...d5
- 2.Bxb8#
- 1...Bd4
- 2.Qe6#
- 1...Sd3
- 2.Sxd3#
- 1...Sf2
- 2.d4#
- 1...Sg5
- 2.Rf5#
- threat
- 1.Kg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- R(f);N_GUARD::R1(J)
- R(f);N_GUARD,P_PINS(F)::R1(J),XR(f)
- R(k);OGATE::PXR(k)=Q
- B(b);N_GUARD::P(C)
- B(g);CHECK,XQ(E)::S(G),XB(g)
- B(g);N_PINQ(E)::QAR1(E)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD,N_PINQ(E)::S(F),XS(a)
- S(c);S_CUTB(b)::P(C)
- S(c);OGATE,XS(F)::P(D),XS(c)
- S(c);S_CUTR(f)::R1(J)
- P(i);OGATEB::B(H),XR(k)
- P(j);N_GUARD::S(F)
- Tries
- Try
- K(B);N_SPINQ(E),P-FLIGHT
- Threat
- QAR1(E)
- Vars
- S(a);CHECK,N_GUARD::S(F),XS(a)
- B(g);XQ(E)::S(G),XB(g)
- P(i);OGATEB::B(H),XR(k)
- B(b);SBLOCK::QAR1(E)
- S(c);S_CUTB(b)::P(C)
- S(c);S_CUTR(f)::R1(J)
- Refutation
- B(b);CHECK
- Try
- B(A);N_SPINQ(E)
- Threat
- QAR1(E)
- Vars
- B(g);P_PINB(A),XQ(E)::S(G),XB(g)
- S(a);XB(A)::S(F),XS(a)
- P(i);OGATEB::B(H),XR(k)
- B(b);SBLOCK::QAR1(E)
- S(c);S_CUTR(f)::R1(J)
- Refutation
- S(c);
- Try
- P(C);N_SPINQ(E)
- Threat
- QAR1(E)
- Vars
- B(g);P_PINP(C),XQ(E)::S(G),XB(g)
- S(a);XP(C)::S(F),XS(a)
- P(i);OGATEB::B(H),XR(k)
- B(b);SBLOCK::QAR1(E)
- S(c);S_CUTB(b)::P(C)
- Refutation
- S(c);
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,XQ(E)::S(G),XB(g)
- Refutation
- R(k);XQ(I)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,XQ(E)::S(G),XB(g)
- R(k);XS(G)::B(I)
- B(b);XS(G)::B(I)
- R(k);::B(I)
- Refutation
- R(k);XB(I)
- Try
- Actual
- K(B);N_SPINQ(E),S_FLIGHT
- Threat
- QAR1(E)
- Vars
- S(c);CHECK,OGATE,XS(F)::P(D),XS(c)
- B(g);XQ(E)::S(G),XB(g)
- P(i);OGATEB::B(H),XR(k)
- B(b);SBLOCK::QAR1(E)
- S(a);N_GUARD::S(F),XS(a)
- S(c);S_CUTB(b)::P(C)
- S(c);S_CUTR(f)::R1(J)
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).