MESON Chess Problem Database
Problem Display
PID: 15968 (2Qb2B1/3p3K/1PPBN3/3NPnp1/2kp4/1R1Rp3/Pnpp4/4r2b w - - 0 1)
Avner, Uri
1st Prize, Cheltenham TT, 2000
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Sc5#
- 2.Sxg5#
- 1...Bxd5
- 2.Qa6#
- 1...Bxb6
- 2.Sxb6#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sxd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...dxc6
- 2.Qxc6#
- 1...Kxd5
- Tries
- 1.Sxe3+?
- 1...Sxe3
- 2.Rxd4#
- 1...dxe3
- 2.Qa6#
- 1...Rxe3!
- 1...Sxe3
- 1.Sb4?
- threat
- 2.Qa6#
- 1...Kb5
- 2.Qa6#
- 1...Bxc6
- 2.Sxd4#
- 1...Sxd6!
- threat
- 1.Sdf4?
- threat
- 2.Rb4#
- 2.Qa6#
- 1...Bxc6
- 2.Sxd4#
- 2.Sxg5#
- 2.Sg7#
- 2.Sxd8#
- 2.Sf8#
- 2.Rb4#
- 1...Sxd3
- 2.Qa6#
- 1...Sxd6
- 2.Rxd4#
- 1...gxf4!
- threat
- 1.Sf6?
- threat
- 2.Qa6#
- 1...Bxc6
- 2.Sxd4#
- 2.Sf4#
- 2.Sxg5#
- 2.Sg7#
- 2.Sxd8#
- 2.Sf8#
- 1...Sxd6
- 2.Rxd4#
- 1...Bxf6!
- threat
- 1.Se7?
- threat
- 2.Qa6#
- 1...Bxc6
- 2.Sxd4#
- 2.Sf4#
- 2.Sxg5#
- 2.Sg7#
- 2.Sxd8#
- 2.Sf8#
- 1...Sxd6
- 2.Rxd4#
- 1...Sxe7
- 2.Rxd4#
- 1...Bxe7!
- threat
- 1.Sxd4?
- threat
- 2.Sxe3#
- 2.Rbc3#
- 2.Qa6#
- 1...Bxd5
- 2.Rbc3#
- 2.Qa6#
- 1...Sxd4
- 2.Sxe3#
- 2.Rdc3#
- 1...Sxd6
- 2.Rbc3#
- 1...c1Q
- 2.Sxe3#
- 2.Qa6#
- 1...c1R
- 2.Sxe3#
- 2.Qa6#
- 1...d1S
- 2.Sxe3#
- 2.Qa6#
- 1...Sd1
- 2.Sxe3#
- 2.Qa6#
- 1...Sa4
- 2.Sxe3#
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Rbc3#
- 2.Qa6#
- 1...Sxd3!
- threat
- 1.Sef4?
- threat
- 2.Sxe3#
- 2.Rb4#
- 2.Qa6#
- 1...Bxd5
- 2.Bxd5#
- 2.Rb4#
- 2.Qa6#
- 1...Sxd3
- 2.Sxe3#
- 2.Qa6#
- 1...gxf4
- 2.Sxe3#
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Rb4#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Sc5?
- threat
- 2.Sxe3#
- 2.Rb4#
- 2.Qa6#
- 1...Bxd5
- 2.Qa6#
- 1...Sxd3
- 2.Sxe3#
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Rb4#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Sxg5?
- threat
- 2.Sxe3#
- 2.Qa6#
- 1...Bxd5
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Sec7?
- threat
- 2.Sxe3#
- 2.Qa6#
- 1...Bxd5
- 2.Bxd5#
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Sg7?
- threat
- 2.Sxe3#
- 2.Qa6#
- 1...Bxd5
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Sxd8?
- threat
- 2.Sxe3#
- 2.Qa6#
- 2.cxd7#
- 1...Bxd5
- 2.Qa6#
- 2.cxd7#
- 1...Sxd3
- 2.Sxe3#
- 2.Qa6#
- 1...dxc6
- 2.Sxe3#
- 2.Qa6#
- 2.Qxc6#
- 1...Sa4
- 2.Sxe3#
- 2.Qa6#
- 1...Se7
- 2.Sxe3#
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Qa6#
- 2.cxd7#
- 1...Sxd6!
- threat
- 1.Sf8?
- threat
- 2.Sxe3#
- 2.Qa6#
- 1...Bxd5
- 2.Qa6#
- 1...e2
- 2.Se3#
- 2.Qa6#
- 1...Sxd6!
- threat
- 1.Rbc3+?
- 1...Kxd5
- 2.Sc5#
- 2.Sxg5#
- 1...dxc3
- 2.Qa6#
- 1...Kb5!
- 1...Kxd5
- 1.Rb4+?
- 1...Kxd5
- 2.Sc5#
- 2.Sxg5#
- 1...Kxd3!
- 1...Kxd5
- 1.Rdc3+?
- 1...Kxd5
- 2.Sc5#
- 2.Sxg5#
- 1...dxc3!
- 1...Kxd5
- 1.cxd7+?
- 1...Kxd5
- 2.Sc5#
- 2.Sxg5#
- 1...Bc7!
- 1...Kxd5
- 1.Sxe3+?
- Keys
- 1.Sc3!
- threat
- 2.Qa6#
- 1...Kxd3
- 2.Sc5#
- 1...Bxc6
- 2.Sf4#
- 1...Sxd6
- 2.Rxd4#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- B(b);SBLOCK,XS(D)::QAB(K)
- B(l);XP(F)::S(D),XB(l)
- S(i);N_GUARD::R1(C),XP(h)
- S(i);N_GUARD,XB(H)::R1(C),XP(h)
- P(k);OGATE,P_SPINP(k),XP(G)::QAR2(K),XP(k)
- Tries
- Try
- S(D);CHECK,XP(f)
- Vars
- S(i);XS(D)::R1(C),XP(h)
- P(h);XS(D)::QAB(K)
- Refutation
- R(a);XS(D)
- Try
- S(D);
- Threat
- QAB(K)
- Vars
- K(g);S_FLIGHT::QAB1(K)
- B(b);N_GUARD,P_SPINB(b),XP(G)::B(L)+S(I),XP(h)
- Refutation
- S(i);XB(H)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(c);XR(C)::QAB(K)
- S(i);N_GUARD,XB(H)::R1(C),XP(h)
- Refutation
- P(j);XS(D)
- Try
- S(D);
- Threat
- QAB(K)
- Vars
- S(i);N_GUARD,XB(H)::R1(C),XP(h)
- Refutation
- B(l);XS(D)
- Try
- S(D);
- Threat
- QAB(K)
- Vars
- S(i);N_GUARD,XB(H)::R1(C),XP(h)
- S(i);N_GUARD,XS(D)::R1(C),XP(h)
- Refutation
- B(l);XS(D)
- Try
- S(I);XP(h)
- Threat
- DUALS(3)
- Vars
- S(i);XB(H)::R1(B)
- Refutation
- S(c);XR(C)
- Try
- S(I);
- Threat
- DUALS(3)
- Refutation
- S(i);XB(H)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(b);P_SPINB(b),XS(D)::QAB(K)
- Refutation
- S(i);XB(H)
- Try
- S(I);XP(j)
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINB(b),XS(D)::QAB(K)
- Refutation
- S(i);XB(H)
- Try
- S(I);
- Threat
- DUALS(2)
- Refutation
- S(i);XB(H)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINB(b),XS(D)::QAB(K)
- Refutation
- S(i);XB(H)
- Try
- S(I);XB(l)
- Threat
- DUALS(3)
- Refutation
- S(i);XB(H)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINB(b),XS(D)::QAB(K)
- Refutation
- S(i);XB(H)
- Try
- R(B);CHECK
- Vars
- P(h);XR(B)::QAB(K)
- Refutation
- K(g);S_FLIGHT
- Try
- R(B);CHECK
- Refutation
- K(g);S_FLIGHT,XR(C)
- Try
- R(C);CHECK
- Refutation
- P(h);XR(C)
- Try
- P(G);CHECK,XP(k)
- Refutation
- B(l);P_SPINB(l)
- Try
- Actual
- S(D);
- Threat
- QAB(K)
- Vars
- K(g);S_FLIGHT,XR(C)::S(I)
- B(b);N_GUARD,P_SPINB(b),XP(G)::B(L)+S(I)
- S(i);N_GUARD,XB(H)::R1(C),XP(h)
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).