MESON Chess Problem Database
Problem Display
PID: 253663 (2rN4/7Q/3BRP2/q1Np3n/3kP3/n1pp3b/BP3P2/2R3K1 w - - 0 1)
Uris, Miguel
Sachmatija, 2021
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.bxc3#
- 1...Qc7
- 2.bxc3#
- 1...Qxd8
- 2.bxc3#
- 1...Qa4
- 2.bxc3#
- 1...Qb5
- 2.bxc3#
- 1...Qxc5
- 2.Be5#
- 1...Qa6
- 2.bxc3#
- 1...Qa7
- 2.bxc3#
- 1...Qa8
- 2.bxc3#
- 1...Rxc5
- 2.Be5#
- 1...Rc6
- 2.Sxc6#
- 1...Ra8
- 2.Sc6#
- 1...Rb8
- 2.Sc6#
- 1...Bxe6
- 2.Scxe6#
- 2.Sdxe6#
- 1...Sc4
- 2.Sb3#
- 1...cxb2
- 2.Sb3#
- 2.Be5#
- 1...dxe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qb6
- Tries
- 1.Sdb7?
- threat
- 2.Be5#
- 1...Bxe6
- 2.Sxe6#
- 1...Qc7
- 2.bxc3#
- 1...Sc4
- 2.Sb3#
- 1...Rg8+!
- threat
- 1.Rxc3?
- threat
- 2.Sb3#
- 2.Be5#
- 2.Rxd3#
- 1...Qxc5
- 2.Be5#
- 1...Rxc5
- 2.Be5#
- 1...Bxe6
- 2.Sb3#
- 2.Scxe6#
- 2.Sdxe6#
- 2.Rxd3#
- 1...dxe4
- 2.Be5#
- 2.Rxe4#
- 2.Qxe4#
- 1...Qc7
- 2.Sb3#
- 2.Rxd3#
- 1...Qb4
- 2.Be5#
- 2.Rxd3#
- 1...Qb6
- 2.Be5#
- 2.Rxd3#
- 1...Qa4
- 2.Be5#
- 2.Rxd3#
- 1...Qb5
- 2.Be5#
- 1...Qa6
- 2.Sb3#
- 2.Be5#
- 1...Rb8
- 2.Sc6#
- 2.Be5#
- 2.Rxd3#
- 1...Bf1
- 2.Sb3#
- 2.Be5#
- 1...Sc4
- 2.Sb3#
- 2.Rxd3#
- 1...Sf4
- 2.Sb3#
- 2.Be5#
- 1...d2
- 2.Sb3#
- 2.Be5#
- 2.Rd3#
- 1...Qxc3!
- threat
- 1.Qf5?
- threat
- 2.Qxd5#
- 2.Qe5#
- 1...Qxc5
- 2.Be5#
- 2.Qe5#
- 1...Rxc5
- 2.Be5#
- 2.Qe5#
- 1...Sxf6
- 2.Qe5#
- 2.Qxf6#
- 1...dxe4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qd5#
- 2.Qe5#
- 1...Qa8
- 2.Qe5#
- 2.bxc3#
- 1...Sc4
- 2.Sb3#
- 2.Qxd5#
- 1...Sf4
- 2.Qe5#
- 1...Bxf5!
- threat
- 1.Qxh5?
- threat
- 2.Qxd5#
- 2.Qe5#
- 1...Qxc5
- 2.Qe5#
- 1...Rxc5
- 2.Qe5#
- 1...Bxe6
- 2.Sdxe6#
- 2.Qe5#
- 1...dxe4
- 2.Rxe4#
- 2.Qd5#
- 2.Qe5#
- 1...Qa8
- 2.Qe5#
- 2.bxc3#
- 1...Sc4
- 2.Sb3#
- 2.Qxd5#
- 1...Bf5!
- threat
- 1.Qc7?
- threat
- 2.Sb3#
- 2.Sc6#
- 2.Be5#
- 1...Qxc7
- 2.bxc3#
- 1...Qxc5
- 2.Bxc5#
- 1...Rxd8
- 2.Sb3#
- 2.Be5#
- 1...Bxe6
- 2.Sc6#
- 2.Sdxe6#
- 2.Be5#
- 1...dxe4
- 2.Sc6#
- 2.Be5#
- 2.Rxe4#
- 1...Qb4
- 2.Sc6#
- 2.Be5#
- 1...Qb6
- 2.Be5#
- 2.bxc3#
- 1...Qa4
- 2.Be5#
- 2.bxc3#
- 1...Qb5
- 2.Be5#
- 2.bxc3#
- 1...Qa6
- 2.Sb3#
- 2.Be5#
- 2.bxc3#
- 1...Qa8
- 2.Sb3#
- 2.Be5#
- 2.bxc3#
- 1...Rb8
- 2.Sc6#
- 2.Be5#
- 1...Sc4
- 2.Sb3#
- 2.Sc6#
- 1...d2
- 2.Sc6#
- 2.Be5#
- 1...Rxc7!
- threat
- 1.exd5?
- threat
- 2.Re4#
- 2.Qxd3#
- 2.Qe4#
- 1...Qxc5
- 2.Be5#
- 2.Re4#
- 2.Qe4#
- 1...Rxc5
- 2.Be5#
- 2.Re4#
- 2.Qe4#
- 1...Bxe6
- 2.Scxe6#
- 2.Sdxe6#
- 2.Qxd3#
- 2.Qe4#
- 1...Sxf6
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 2.Qe4#
- 1...Qb5
- 2.Re4#
- 2.Qe4#
- 2.bxc3#
- 1...Qa6
- 2.Re4#
- 2.Qe4#
- 2.bxc3#
- 1...Bf1
- 2.Re4#
- 2.Qe4#
- 1...Bg2
- 2.Qxd3#
- 1...Sg3
- 2.Qxd3#
- 1...Sf4
- 2.Re4#
- 2.Qe4#
- 1...d2
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 1...Bf5!
- threat
- 1.Sdb7?
- Keys
- 1.Qa7!
- threat
- 2.Be5#
- 1...Qxc5
- 2.bxc3#
- 1...Qxa7
- 2.bxc3#
- 1...Rxc5
- 2.Sc6#
- 1...Bxe6
- 2.Sdxe6#
- 1...Qc7
- 2.bxc3#
- 1...Qb6
- 2.bxc3#
- 1...Sc4
- 2.Sb3#
- threat
- 1.Qa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(f);N_GUARD::P(D),XP(b)
- Q(f);N_GUARD,XS(L)::P(D),XP(b)
- Q(f);SBLOCK,XS(G)::B(H)
- R(i);SBLOCK,XS(G)::B(H)
- R(i);N_GUARD::S(L),XR(i)
- R(i);N_GUARD::S(L)
- S(a);SBLOCK::S(G)
- Tries
- Try
- S(L);
- Threat
- B(H)
- Vars
- B(d);XR(I)::S(G),XB(d)
- Q(f);N_GUARD::P(D),XP(b)
- S(a);SBLOCK::S(G)
- Refutation
- R(i);CHECK
- Try
- R(A);XP(b)
- Threat
- DUALS(3)
- Vars
- Q(f);XS(G)::B(H)
- R(i);XS(G)::B(H)
- Q(f);::B(H)
- Refutation
- Q(f);XR(A)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(h);::QAB1(K)
- Refutation
- B(d);XQ(K)
- Try
- Q(K);XS(h)
- Threat
- DUALS(2)
- Vars
- Q(f);XS(G)::QAB1(K)
- R(i);XS(G)::QAB1(K)
- Refutation
- B(d);
- Try
- Q(K);
- Threat
- DUALS(3)
- Vars
- Q(f);N_GUARD,XQ(K)::P(D),XP(b)
- Q(f);OGATE,XS(G)::B(H),XQ(f)
- Refutation
- R(i);XQ(K)
- Try
- P(F);XP(g)
- Threat
- DUALS(3)
- Vars
- S(h);XP(J)::QAR1(K),XP(c)
- B(d);::QAR1(K),XP(c)
- S(h);::QAR1(K),XP(c)
- Refutation
- B(d);
- Try
- Actual
- Q(K);
- Threat
- B(H)
- Vars
- Q(f);N_GUARD,P_SPINQ(f),XS(G)::P(D),XP(b)
- Q(f);N_GUARD,XQ(K)::P(D),XP(b)
- R(i);N_GUARD,P_SPINR(i),XS(G)::S(L)
- B(d);XR(I)::S(L),XB(d)
- Q(f);N_GUARD::P(D),XP(b)
- S(a);SBLOCK::QAB(K)+S(G),DCHECK
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).