MESON Chess Problem Database
Problem Display
PID: 125350 (5N2/K2Pr3/1PB4R/2p1kP1n/5pP1/4ppn1/1b6/2NRQ3 w - - 0 1)
Petite, Efren
1st HM., Israel Ring Ty., 1984
#2
11 + 9
| 721 | Variantim | 1988 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Rxe6#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rf7
- 2.Re6#
- 1...Rg7
- 2.Re6#
- 1...Rh7
- 2.Re6#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxc1
- 2.Qc3#
- 1...Ba3
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Sd3#
- 1...Se4
- 2.Rd5#
- 1...Sf6
- 2.Sg6#
- 1...c4
- 2.Qa5#
- 1...Re6
- Tries
- 1.Bxf3?
- threat
- 2.Rd5#
- 1...Rxd7+
- 2.Sxd7#
- 1...Bd4
- 2.Sd3#
- 1...Sf6
- 2.Sg6#
- 1...Se4!
- threat
- 1.Rdd6?
- threat
- 2.Sd3#
- 1...Rxd7+
- 2.Sxd7#
- 1...Bxc1
- 2.Qc3#
- 1...Re6
- 2.Rhxe6#
- 1...c4
- 2.Qa5#
- 1...Sf6!
- threat
- 1.Rhd6?
- threat
- 2.Sg6#
- 1...Rxd7+
- 2.Sxd7#
- 1...Re6
- 2.Rxe6#
- 1...Rg7
- 2.Re6#
- 1...Bd4!
- threat
- 1.Qd2?
- threat
- 2.Qxb2#
- 2.Qd5#
- 2.Qd6#
- 1...Rxd7+
- 2.Sxd7#
- 1...Bxc1
- 2.Qc3#
- 2.Qd5#
- 2.Qd6#
- 1...Sxf5
- 2.Qd5#
- 1...Ba1
- 2.Qd5#
- 2.Qd6#
- 1...Re6
- 2.Rxe6#
- 2.Qxb2#
- 2.Qd5#
- 1...Ba3
- 2.Qc3#
- 2.Qd5#
- 2.Qd6#
- 1...Bc3
- 2.Qxc3#
- 2.Qd5#
- 2.Qd6#
- 1...Bd4
- 2.Sd3#
- 1...Se2
- 2.Qd5#
- 2.Qd6#
- 1...Se4
- 2.Qd5#
- 1...Sf6
- 2.Sg6#
- 2.Qxb2#
- 2.Qd6#
- 1...c4
- 2.Qa5#
- 2.Qd5#
- 2.Qd6#
- 1...exd2!
- threat
- 1.Qb4?
- threat
- 2.Sd3#
- 2.Rd5#
- 2.Qxc5#
- 2.Qxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Bxc1
- 2.Rd5#
- 2.Qc3#
- 2.Qxc5#
- 1...Sxf5
- 2.Sd3#
- 2.Rd5#
- 2.Qxc5#
- 2.Qe4#
- 1...Ba1
- 2.Sd3#
- 2.Rd5#
- 2.Qxc5#
- 1...Re6
- 2.Rd5#
- 2.Rxe6#
- 2.Qxc5#
- 2.Qxb2#
- 1...Ba3
- 2.Sd3#
- 2.Rd5#
- 2.Qc3#
- 1...Bc3
- 2.Sd3#
- 2.Rd5#
- 2.Qxc3#
- 2.Qxc5#
- 1...Bd4
- 2.Sd3#
- 1...Se2
- 2.Sd3#
- 2.Rd5#
- 2.Qxc5#
- 2.Qe4#
- 1...Se4
- 2.Sd3#
- 2.Rd5#
- 2.Qxe4#
- 1...Sf6
- 2.Sg6#
- 2.Qxb2#
- 1...c4
- 2.Qa5#
- 2.Qc5#
- 2.Qd6#
- 2.Qxe7#
- 2.Qb5#
- 1...cxb4!
- threat
- 1.Qxe3+?
- 1...Se4
- 2.Sd3#
- 2.Rd5#
- 2.Qxe4#
- 1...fxe3!
- 1...Se4
- 1.b7?
- threat
- 2.b8Q#
- 2.b8B#
- 1...Rxd7
- 2.Sxd7#
- 2.Re6#
- 1...Bxc1
- 2.Qc3#
- 2.b8Q#
- 2.b8B#
- 1...Ba1
- 2.b8Q#
- 2.b8B#
- 1...Re6
- 2.Rxe6#
- 1...Rf7
- 2.Re6#
- 2.b8Q#
- 2.b8B#
- 1...Rg7
- 2.Re6#
- 2.b8Q#
- 2.b8B#
- 1...Rh7
- 2.Re6#
- 2.b8Q#
- 2.b8B#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ba3
- 2.Qc3#
- 2.b8Q#
- 2.b8B#
- 1...Bc3
- 2.Qxc3#
- 2.b8Q#
- 2.b8B#
- 1...Bd4
- 2.Sd3#
- 2.b8Q#
- 2.b8B#
- 1...Sf1
- 2.b8Q#
- 2.b8B#
- 1...Sh1
- 2.b8Q#
- 2.b8B#
- 1...Se2
- 2.b8Q#
- 2.b8B#
- 1...Se4
- 2.Rd5#
- 1...Sf6
- 2.Sg6#
- 2.b8Q#
- 2.b8B#
- 1...Sg7
- 2.b8Q#
- 2.b8B#
- 1...e2
- 2.b8Q#
- 2.b8B#
- 1...f2
- 2.b8Q#
- 2.b8B#
- 1...c4
- 2.Qa5#
- 2.b8Q#
- 2.b8B#
- 1...Sxf5!
- threat
- 1.Bxf3?
- Keys
- 1.Qa5!
- threat
- 2.Qxc5#
- 1...Rxd7+
- 2.Sxd7#
- 1...Ba3
- 2.Qc3#
- 1...Bd4
- 2.Sd3#
- 1...Se4
- 2.Rd5#
- 1...Sf6
- 2.Sg6#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- R(i);N_GUARD,N_PINP(J)::R1(H),XR(i)
- R(i);CHECK,XP(J)::S(K),XR(i)
- R(i);N_GUARD::R1(H)
- R(i);N_PINP(J)::PXR(i)=Q
- B(a);N_GUARD,XS(A)::QAB(C)
- B(a);N_GUARD::QAB(C)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);SBLOCK::S(A)
- S(d);N_SPINP(b),SBLOCK::R1(B)
- S(h);SBLOCK::S(K)
- P(f);OGATEB::QAR(C)
- Tries
- Try
- B(G);XP(c)
- Threat
- R1(B)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- B(a);SBLOCK::S(A)
- S(h);SBLOCK::S(K)
- Refutation
- S(d);N_SPINP(b)
- Try
- R(B);
- Threat
- S(A)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- B(a);N_GUARD,XS(A)::QAB(C)
- R(i);N_GUARD,N_PINP(J)::R1(H),XR(i)
- P(f);OGATEB::QAR(C)
- Refutation
- S(h);
- Try
- R(H);
- Threat
- S(K)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- R(i);N_GUARD,N_PINP(J)::R1(H),XR(i)
- R(i);N_GUARD::R1(H)
- Refutation
- B(a);
- Try
- Q(C);N_PINP(b)
- Threat
- DUALS(3)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- S(d);XP(E)::QAR1(C)
- B(a);SBLOCK::S(A)
- S(d);::QAR1(C)
- Refutation
- P(b);XQ(C)
- Try
- Q(C);N_PINP(b)
- Threat
- DUALS(4)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- B(a);::S(A)
- Refutation
- P(f);XQ(C)
- Try
- Q(C);CHECK,XP(b)
- Refutation
- P(e);XQ(C)
- Try
- P(F);N_SPINP(J)
- Threat
- P=Q
- Vars
- B(a);::P=Q
- R(i);N_GUARD::R1(H),XR(i)
- R(i);OGATE::PXR(i)=Q
- S(d);::P=Q
- S(d);N_SPINP(b)::P=Q
- S(d);N_SPINP(b),SBLOCK::R1(B)
- S(h);::P=Q
- P(b);::P=Q
- P(c);::P=Q
- Refutation
- S(d);XP(E)
- Try
- Actual
- Q(C);N_PINP(b),P_PINP(f)
- Threat
- QAR2(C),XP(f)
- Vars
- R(i);CHECK,XP(J)::S(K),XR(i)
- B(a);N_GUARD::QAB(C)
- B(a);SBLOCK::S(A)
- S(d);SBLOCK::R1(B)
- S(h);SBLOCK::S(K)
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).