MESON Chess Problem Database
Problem Display
PID: 133429 (4K3/pN1Qp1P1/2p2p1b/1b1NP3/1R1pk1P1/1B1p3R/4P2B/q1r2r2 w - - 0 1)
Keller, Michael
3rd Prize, Israel Ring Ty., 2007
#2
12 + 12
| 721 | Variantim | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc5#
- 1...Rcd1
- 2.Sc5#
- 1...Rce1
- 2.Sc5#
- 1...Rc4
- 2.exd3#
- 1...Rc5
- 2.Sxc5#
- 1...Rfd1
- 2.Qf5#
- 1...Rfe1
- 2.Qf5#
- 1...Rg1
- 2.Qf5#
- 1...Rh1
- 2.Qf5#
- 1...Rf3
- 2.exf3#
- 1...Rf4
- 2.Re3#
- 1...Rf5
- 2.Qxf5#
- 1...Ba4
- 2.exd3#
- 1...Bc4
- 2.Sc5#
- 1...Be3
- 2.Rxe3#
- 1...Bf4
- 2.Qf5#
- 1...Bxg7
- 2.Re3#
- 1...cxd5
- 2.Bxd5#
- 1...e6
- 2.Sd6#
- 1...Rb1
- Tries
- 1.Sc3+?
- 1...Rxc3
- 2.Rxd4#
- 2.Qxd4#
- 1...Qxc3!
- 1...Rxc3
- 1.Sxf6+?
- 1...exf6
- 2.Sd6#
- 1...Rxf6!
- 1...exf6
- 1.Bf4?
- threat
- 2.Re3#
- 2.Qf5#
- 1...Rxf4
- 2.Re3#
- 1...Bxf4
- 2.Qf5#
- 1...Rc4
- 2.exd3#
- 1...Rf3
- 2.Qf5#
- 2.exf3#
- 1...Bc4
- 2.Sc5#
- 1...c5
- 2.Re3#
- 1...f5
- 2.Re3#
- 2.Qxf5#
- 1...e6
- 2.Sd6#
- 2.Re3#
- 1...cxd5!
- threat
- 1.Bc4?
- threat
- 2.Sc5#
- 2.exd3#
- 1...Rxc4
- 2.exd3#
- 1...Bxc4
- 2.Sc5#
- 1...dxe2
- 2.Sc5#
- 1...Bf4
- 2.Qf5#
- 1...Qc3
- 2.Sc5#
- 1...Qb1
- 2.Sc5#
- 1...Qa3
- 2.Sc5#
- 1...Rcd1
- 2.Sc5#
- 1...Rc3
- 2.Sc5#
- 1...Rfd1
- 2.Sc5#
- 2.Qf5#
- 1...Rf3
- 2.Sc5#
- 2.exf3#
- 1...d2
- 2.Sc5#
- 1...c5
- 2.Sxc5#
- 2.exd3#
- 1...Rf4!
- threat
- 1.Rc4?
- threat
- 2.Sc5#
- 2.exd3#
- 1...Rxc4
- 2.exd3#
- 1...Bxc4
- 2.Sc5#
- 1...dxe2
- 2.Sc5#
- 1...Rf4
- 2.Re3#
- 1...Qc3
- 2.Sc5#
- 1...Qb1
- 2.Sc5#
- 1...Qa3
- 2.exd3#
- 1...Rcd1
- 2.Sc5#
- 1...Rc3
- 2.Sc5#
- 1...Rfd1
- 2.Sc5#
- 1...Rf3
- 2.Sc5#
- 2.exf3#
- 1...Be3
- 2.Sc5#
- 2.Rxe3#
- 1...d2
- 2.Sc5#
- 1...c5
- 2.Sxc5#
- 2.exd3#
- 1...Bf4!
- threat
- 1.g5?
- threat
- 2.Re3#
- 1...cxd5
- 2.Bxd5#
- 1...e6
- 2.Sd6#
- 1...Rc4
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Bc4
- 2.Sc5#
- 1...Bxg5!
- threat
- 1.Sc3+?
- Keys
- 1.Kxe7!
- threat
- 2.Sd6#
- 1...Rf4
- 2.Re3#
- 1...Bf4
- 2.Qf5#
- 1...Rc4
- 2.exd3#
- 1...Bc4
- 2.Sc5#
- threat
- 1.Kxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- R(b);N_GUARD::S(I)
- R(b);N_SPINP(e),S_CUTB(g)::P(A),XP(d)
- R(b);N_GUARD::S(I),XR(b)
- R(c);N_GUARD::QAB1(J)
- R(c);OGATE::P(A),XR(c)
- R(c);S_CUTB(j)::R1(D)
- R(c);N_GUARD::QAB1(J),XR(c)
- B(g);N_GUARD::P(A),XP(d)
- B(g);N_SPINP(e),S_CUTR(b)::S(I)
- B(j);N_GUARD::R1(D),XB(j)
- B(j);S_CUTR(c)::QAB1(J)
- B(j);N_GUARD,XP(K)::R1(D)
- P(h);OGATE,P_PINQ(J),XS(G)::B(C),XP(h)
- P(l);N_GUARD::S(I)
- Tries
- Try
- S(G);CHECK
- Refutation
- Q(a);XS(G)
- Try
- S(G);CHECK,XP(i)
- Vars
- P(l);XS(G)::S(I)
- Refutation
- R(c);XS(G)
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- R(c);XB(B)::R1(D)
- B(j);XB(B)::QAB1(J)
- R(b);N_SPINP(e),S_CUTB(g)::P(A),XP(d)
- B(g);N_SPINP(e),S_CUTR(b)::S(I)
- P(h);P_PINQ(J)::R1(D)
- Refutation
- P(h);P_PINQ(J),XS(G)
- Try
- B(C);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- R(b);XB(C)::P(A),XP(d)
- B(g);XB(C)::S(I)
- P(d);XP(A)::S(I)
- B(j);S_CUTR(c)::QAB1(J)
- Q(a);::S(I)
- R(b);::S(I)
- P(d);::S(I)
- Refutation
- R(c);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINP(e),XR(E)::P(A),XP(d)
- B(g);N_SPINP(e),XR(E)::S(I)
- P(d);XP(A)::S(I)
- R(c);S_CUTB(j)::R1(D)
- Q(a);::S(I)
- Q(a);::P(A),XP(d)
- R(b);::S(I)
- R(c);::S(I)
- P(d);::S(I)
- Refutation
- B(j);
- Try
- P(F);
- Threat
- R1(D)
- Vars
- P(h);OGATE,P_PINQ(J),XS(G)::B(C),XP(h)
- P(l);N_GUARD::S(I)
- R(b);N_SPINP(e),S_CUTB(g)::P(A),XP(d)
- R(c);OGATE::P(A),XR(c)
- B(g);N_SPINP(e),S_CUTR(b)::S(I)
- Refutation
- B(j);XP(F)
- Try
- Actual
- K(L);P-FLIGHT,XP(l)
- Threat
- S(I)
- Vars
- R(c);S_CUTB(j)::R1(D)
- B(j);S_CUTR(c)::QAB1(J)
- R(b);N_SPINP(e),S_CUTB(g)::P(A),XP(d)
- B(g);N_SPINP(e),S_CUTR(b)::S(I)
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).