MESON Chess Problem Database
Problem Display
PID: 66947 (6Q1/K2N1nBn/4b2P/1NPR1p2/pr2kp1R/8/1P2BP2/2r5 w - - 0 1)
Zajic, Helmut
Source?, 0000
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Qa8#
- 1...Ra1
- 2.Sc3#
- 1...Rb1
- 2.Sc3#
- 1...Rd1
- 2.Sc3#
- 1...Re1
- 2.Sc3#
- 1...Rf1
- 2.Sc3#
- 1...Rg1
- 2.Sc3#
- 1...Rh1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb2
- 2.Rd4#
- 1...Rb3
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rxb5
- 2.Rd4#
- 1...Se5
- 2.Rxe5#
- 1...Sfg5
- 2.Re5#
- 1...Sd6
- 2.Re5#
- 2.Qxe6#
- 1...Sxh6
- 2.Re5#
- 2.Qxe6#
- 1...Sd8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 2.Qxe6#
- 1...Shg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Kxd5
- Tries
- 1.Sd6+?
- 1...Sxd6
- 2.Qxe6#
- 1...Kxd5!
- 1...Sxd6
- 1.Bd3+?
- 1...Kxd5
- 2.Qa8#
- 1...Kf3!
- 1...Kxd5
- 1.Bc3?
- threat
- 2.Qg2#
- 1...Kxd5
- 2.Qa8#
- 1...Rxc3
- 2.Sxc3#
- 1...Se5
- 2.Rxe5#
- 1...Sfg5
- 2.Re5#
- 1...Shg5
- 2.Sf6#
- 1...Rg1!
- threat
- 1.Bd4?
- threat
- 2.Qg2#
- 1...Kxd5
- 2.Qa8#
- 1...Rg1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Se5
- 2.Rxe5#
- 1...Sfg5
- 2.Re5#
- 1...Shg5
- 2.Sf6#
- 1...Rb3!
- threat
- 1.Be5?
- threat
- 2.Qg2#
- 1...Kxd5
- 2.Qa8#
- 1...Sxe5
- 2.Rxe5#
- 1...Rg1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rb3
- 2.Rd4#
- 1...Shg5
- 2.Sf6#
- 1...Sfg5!
- threat
- 1.Bf6?
- threat
- 2.Qg2#
- 1...Kxd5
- 2.Qa8#
- 1...Sfg5
- 2.Re5#
- 1...Rg1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rb3
- 2.Rd4#
- 1...Se5
- 2.Rxe5#
- 1...Shg5!
- threat
- 1.Bf8?
- threat
- 2.Qg2#
- 1...Sfg5
- 2.Re5#
- 1...Rg1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rb3
- 2.Rd4#
- 1...Se5
- 2.Rxe5#
- 1...Shg5
- 2.Sf6#
- 1...Kxd5!
- threat
- 1.Rh3?
- threat
- 2.Bf3#
- 1...Kxd5
- 2.Qa8#
- 1...Bxd5
- 2.Bd3#
- 1...Sfg5
- 2.Re5#
- 1...Rc3
- 2.Sxc3#
- 1...Rb3
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Se5
- 2.Rxe5#
- 1...Shg5
- 2.Sf6#
- 1...f3!
- threat
- 1.Rxf4+?
- 1...Kxd5
- 2.Qa8#
- 1...Kxf4!
- 1...Kxd5
- 1.Rd3?
- threat
- 2.f3#
- 1...Rd4
- 2.Rxd4#
- 1...Sfg5
- 2.Sd6#
- 1...Rf1
- 2.Sc3#
- 1...Se5
- 2.Sd6#
- 1...Shg5!
- threat
- 1.Rxf5?
- threat
- 2.Rhxf4#
- 1...Bxf5
- 2.Qa8#
- 1...Se5
- 2.Rxe5#
- 1...Kxf5!
- threat
- 1.Qxf7?
- threat
- 2.Re5#
- 2.Qxe6#
- 1...Rxc5
- 2.Qxe6#
- 1...Rxb5
- 2.Rd4#
- 2.Qxe6#
- 1...Bxd5
- 2.Sd6#
- 1...Bxd7
- 2.Sd6#
- 2.Re5#
- 1...Bxf7
- 2.Re5#
- 1...Sg5
- 2.Sf6#
- 2.Re5#
- 1...Sf8
- 2.Sf6#
- 2.Re5#
- 1...Kxd5!
- threat
- 1.Qa8?
- threat
- 2.Rd4#
- 2.Re5#
- 1...Rxb5
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 1...Se5
- 2.Sd6#
- 2.Rd4#
- 2.Rxe5#
- 1...Bxd5!
- threat
- 1.f3+?
- 1...Kxd5
- 2.Qa8#
- 1...Ke3!
- 1...Kxd5
- 1.Sd6+?
- Keys
- 1.Bh8!
- threat
- 2.Qg2#
- 1...Kxd5
- 2.Qa8#
- 1...Sfg5
- 2.Re5#
- 1...Rg1
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rb3
- 2.Rd4#
- 1...Se5
- 2.Rxe5#
- 1...Shg5
- 2.Sf6#
- threat
- 1.Bh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD,XP(A)::R1(G)
- R(c);N_GUARD::R1(G)
- R(c);N_GUARD::R1(G),XR(c)
- R(c);N_GUARD,XS(E)::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(h);N_GUARD::R1(G)
- S(i);N_GUARD::S(J)
- S(i);N_GUARD::S(J),XS(i)
- Tries
- Try
- S(E);CHECK
- Vars
- S(h);OGATE,XS(E)::QAR2(L),XB(g)
- Refutation
- K(d);N_SPINP(e),S_FLIGHT,XR(G)
- Try
- B(B);CHECK
- Vars
- K(d);N_SPINP(e),S_FLIGHT,XR(G)::QAB(L)
- Refutation
- K(d);N_SPINP(e),S_FLIGHT
- Try
- B(K);
- Threat
- QAB(L)
- Vars
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- R(a);XB(K)::S(E),XR(a)
- S(h);N_GUARD::R1(G),XS(h)
- S(h);N_GUARD::R1(G)
- S(i);N_GUARD::S(J)
- Refutation
- R(a);
- Try
- B(K);
- Threat
- QAB(L)
- Vars
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- S(h);N_GUARD::R1(G),XS(h)
- S(h);N_GUARD::R1(G)
- S(i);N_GUARD::S(J)
- Refutation
- R(c);
- Try
- B(K);
- Threat
- QAB(L)
- Vars
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- S(h);OGATE,XB(K)::R1(G),XS(h)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::R1(G)
- S(i);N_GUARD::S(J)
- Refutation
- S(h);
- Try
- B(K);
- Threat
- QAB(L)
- Vars
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- S(h);N_GUARD::R1(G)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- Refutation
- S(i);
- Try
- B(K);
- Threat
- QAB(L)
- Vars
- S(h);N_GUARD::R1(G)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::S(J)
- Refutation
- K(d);N_SPINP(e),S_FLIGHT,XR(G)
- Try
- R(D);N_PINP(e)
- Threat
- B(B)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(G)::QAB(L)
- B(g);SBLOCK,XR(G)::B(B)
- S(h);N_GUARD::R1(G)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::R1(G)
- R(c);N_GUARD::R1(G),XR(c)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::S(J)
- Refutation
- P(e);
- Try
- R(D);CHECK,XP(e)
- Vars
- K(d);S_FLIGHT,XR(G)::QAB(L)
- Refutation
- K(d);P-FLIGHT,XR(D)
- Try
- R(G);
- Threat
- P(C)
- Vars
- R(c);N_GUARD::R1(G),XR(c)
- S(h);N_GUARD::S(E)
- R(a);N_GUARD::S(E)
- Refutation
- S(i);
- Try
- R(G);XP(f)
- Threat
- R1(D),XP(e)
- Vars
- B(g);N_GUARD,SBLOCK,XR(G)::QAB(L)
- S(h);N_GUARD::R1(G),XS(h)
- Refutation
- K(d);N_SPINP(e),S_FLIGHT,XR(G)
- Try
- Q(L);XS(h)
- Threat
- DUALS(2)
- Vars
- R(a);XP(F)::QAR2(L),XB(g)
- B(g);XR(G)::S(E)
- B(g);XQ(L)::R1(G)
- Refutation
- K(d);N_SPINP(e),P_SPINB(g),S_FLIGHT,XR(G)
- Try
- Q(L);
- Threat
- DUALS(2)
- Vars
- R(c);XS(E)::QAB(L)+R(G),DCHECK
- Refutation
- B(g);P_SPINB(g),XR(G)
- Try
- P(C);CHECK
- Vars
- K(d);N_SPINP(e),S_FLIGHT,XR(G)::QAB(L)
- Refutation
- K(d);N_SPINP(e),P-FLIGHT
- Try
- Actual
- B(K);
- Threat
- QAB(L)
- Vars
- K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(G)::QAB(L)
- S(h);N_GUARD::R1(G)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::S(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).