MESON Chess Problem Database
Problem Display
PID: 27519 (6R1/K1pN4/p3Qp1B/1b1Pn2r/R2pk1Pb/1B2Pp2/3P3n/q1r1N3 w - - 0 1)
Petraitis, Vadim
Probleemblad, 2001
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Rxd4#
- 1...Qa2
- 2.Rxd4#
- 1...Qa3
- 2.Rxd4#
- 1...Rb1
- 2.Sc5#
- 1...Rd1
- 2.Sc5#
- 1...Rxe1
- 2.Sc5#
- 1...Rc3
- 2.Rxd4#
- 1...Rc4
- 2.d3#
- 1...Rc5
- 2.Sxc5#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Sxf6#
- 1...Rxh6
- 2.Qf5#
- 1...Bf2
- 2.Sxf6#
- 1...Bg3
- 2.Sxf6#
- 1...Bg5
- 2.Qf5#
- 1...Bxa4
- 2.d3#
- 1...Bc4
- 2.Sc5#
- 1...Bc6
- 2.d3#
- 1...Bxd7
- 2.d3#
- 1...Sxg4
- 2.Rxg4#
- 1...f5
- 2.Qxe5#
- 1...Qb1
- Tries
- 1.Bc2+?
- 1...Bd3
- 2.Sc5#
- 2.Bxd3#
- 1...Rxc2!
- 1...Bd3
- 1.Bc4?
- threat
- 2.Sc5#
- 2.d3#
- 1...Rxc4
- 2.d3#
- 1...Rxh6
- 2.Sc5#
- 2.Qf5#
- 1...Bxc4
- 2.Sc5#
- 1...Bxd7
- 2.Bd3#
- 2.d3#
- 1...dxe3
- 2.Bd3#
- 1...Qc3
- 2.Sc5#
- 1...Qb1
- 2.Sc5#
- 1...Rd1
- 2.Sc5#
- 1...Rc3
- 2.Sc5#
- 1...Rg5
- 2.Sc5#
- 2.Sxf6#
- 1...Bg5
- 2.Sc5#
- 2.Qf5#
- 1...d3
- 2.Sc5#
- 2.Bxd3#
- 1...c5
- 2.Sxc5#
- 2.d3#
- 1...Qa3!
- threat
- 1.Bg5?
- threat
- 2.Sxf6#
- 2.Qf5#
- 1...Rxe1
- 2.Sc5#
- 2.Qf5#
- 1...Rxg5
- 2.Sxf6#
- 1...Bxe1
- 2.Qf5#
- 1...Bxg5
- 2.Qf5#
- 1...Bxd7
- 2.d3#
- 1...fxg5
- 2.Sf6#
- 2.Qf5#
- 2.Qxe5#
- 1...Rc4
- 2.Sxf6#
- 2.d3#
- 1...Rh6
- 2.Qf5#
- 1...Bc4
- 2.Sc5#
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Qxf5#
- 2.Qxe5#
- 1...Sxg4!
- threat
- 1.Rg5?
- threat
- 2.Sxf6#
- 2.Qf5#
- 1...Rxe1
- 2.Sc5#
- 2.Qf5#
- 1...Rxg5
- 2.Sxf6#
- 1...Rxh6
- 2.Qf5#
- 1...Bxe1
- 2.Qf5#
- 1...Bxg5
- 2.Qf5#
- 1...Sxg4
- 2.Rxg4#
- 2.Qf5#
- 1...fxg5
- 2.Sf6#
- 2.Qf5#
- 2.Qxe5#
- 1...Rc4
- 2.Sxf6#
- 1...Bc4
- 2.Sc5#
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Qxf5#
- 2.Qxe5#
- 1...Bxd7!
- threat
- 1.Bc2+?
- Keys
- 1.Rc4!
- threat
- 2.Sc5#
- 2.d3#
- 1...Rxe1
- 2.Sc5#
- 2.Bc2#
- 1...Rxc4
- 2.d3#
- 1...Rxh6
- 2.Sc5#
- 1...Bxe1
- 2.Sc5#
- 1...Bxc4
- 2.Sc5#
- 1...Bxd7
- 2.d3#
- 1...Qc3
- 2.Sc5#
- 1...Qb1
- 2.Sc5#
- 2.Rxd4#
- 1...Qa3
- 2.Rxd4#
- 2.d3#
- 1...Rd1
- 2.Sc5#
- 2.Bc2#
- 1...Rc3
- 2.Sc5#
- 2.Rxd4#
- 1...Rg5
- 2.Sc5#
- 2.Sxf6#
- 1...Bg5
- 2.Sc5#
- 1...c5
- 2.Sxc5#
- 2.d3#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 16
- Sets
- Q(a);N_GUARD::R1(E),XP(e)
- R(b);N_GUARD::S(K)
- R(b);N_GUARD,XS(A)::S(K)
- R(b);S_CUTQ(a)::R1(E),XP(e)
- R(b);N_SPINP(e),S_CUTB(h)::P(B)
- R(b);N_GUARD::S(K),XR(b)
- R(j);N_GUARD::QAB1(H),XR(j)
- R(j);S_CUTB(g)::S(K),XP(l)
- R(j);N_GUARD,XB(I)::QAB1(H)
- B(g);N_GUARD::S(K),XP(l)
- B(g);S_CUTR(j)::QAB1(H)
- B(h);N_GUARD,N_SPINP(e),XR(E)::P(B)
- B(h);N_SPINP(e),S_CUTR(b)::S(K)
- B(h);N_GUARD::P(B)
- B(h);N_GUARD,XS(K)::P(B)
- S(c);OGATE,XP(F)::R(L),XS(c)
- P(l);N_GUARD,S_CUTR(j)::QAR1(H),XS(i)
- Tries
- Try
- B(C);CHECK
- Refutation
- R(b);XB(C)
- Try
- B(C);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- R(b);XB(C)::P(B)
- B(h);XB(C)::S(K)
- P(e);XP(D)::R(E)+B(C),DCHECK
- Q(a);::S(K)
- R(b);::S(K)
- Refutation
- Q(a);
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(j);XB(I)::S(K),XP(l)
- B(g);XS(A)::QAB1(H)
- B(g);XB(I)::QAB1(H)
- B(h);N_GUARD,XS(K)::P(B)
- R(j);::QAB1(H)
- Refutation
- S(c);XP(F)
- Try
- R(L);
- Threat
- DUALS(2)
- Vars
- R(j);XR(L)::S(K),XP(l)
- R(j);XB(I)::QAB1(H)
- B(g);XS(A)::QAB1(H)
- B(g);XR(L)::QAB1(H)
- R(b);N_SPINP(e)::S(K),XP(l)
- Refutation
- B(h);XS(K)
- Try
- Actual
- R(E);
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINP(e),XR(E)::P(B)
- R(j);XB(I)::S(K)
- B(g);XS(A)::S(K)
- B(h);N_SPINP(e),XR(E)::S(K)
- B(h);XS(K)::P(B)
- Q(a);::S(K)
- B(g);::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).