MESON Chess Problem Database
Problem Display
PID: 227421 (6Q1/3p1N1K/1BN1rP2/1P1k1P2/1pr1R3/3P4/q5p1/1B6 w - - 0 1)
Uris, Miguel
Best Problems, 2020
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.dxc4#
- 1...Qb2
- 2.dxc4#
- 1...Qd2
- 2.dxc4#
- 1...Qf2
- 2.dxc4#
- 1...Qa3
- 2.dxc4#
- 1...Qa4
- 2.dxc4#
- 1...Qa5
- 2.dxc4#
- 1...Qa6
- 2.dxc4#
- 1...Qa7
- 2.dxc4#
- 1...Qa8
- 2.dxc4#
- 1...Rc1
- 2.Sxb4#
- 2.Rd4#
- 1...Rc2
- 2.Sxb4#
- 2.Rd4#
- 1...Rc3
- 2.Sxb4#
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rc5
- 2.Sxb4#
- 2.Rd4#
- 1...Rcxc6
- 2.Rd4#
- 1...Re5
- 2.Rxe5#
- 1...Rexc6
- 2.Re5#
- 1...Rd6
- 2.Se7#
- 2.Re5#
- 1...Rxf6
- 2.Se7#
- 2.Re5#
- 1...Re7
- 2.Sxe7#
- 1...b3
- 2.dxc4#
- 1...Qa1
- Tries
- 1.Bxa2?
- threat
- 2.Sxb4#
- 2.Bxc4#
- 2.Rd4#
- 1...Rxe4
- 2.Sxb4#
- 1...Rxc6
- 2.Rd4#
- 2.Re5#
- 1...dxc6
- 2.Bxc4#
- 2.Rd4#
- 1...g1Q
- 2.Sxb4#
- 2.Bxc4#
- 1...g1B
- 2.Sxb4#
- 2.Bxc4#
- 1...b3!
- threat
- 1.Rxc4?
- threat
- 2.Sxb4#
- 2.Rd4#
- 2.Rc5#
- 1...Qxb1
- 2.Rd4#
- 2.Rc5#
- 1...Rxc6
- 2.Rd4#
- 1...dxc6
- 2.Rd4#
- 1...g1Q
- 2.Sxb4#
- 1...g1B
- 2.Sxb4#
- 1...Qb3
- 2.Rd4#
- 2.Rc5#
- 1...Qa1
- 2.Sxb4#
- 2.Rc5#
- 1...Qb2
- 2.Rc5#
- 1...Qc2
- 2.Sxb4#
- 2.Rd4#
- 1...Qd2
- 2.Rd4#
- 2.Rc5#
- 1...Qf2
- 2.Sxb4#
- 1...Qa3
- 2.Rd4#
- 2.Rc5#
- 1...Qa4
- 2.Rd4#
- 2.Rc5#
- 1...Qa5
- 2.Rd4#
- 2.Rc5#
- 1...Re4
- 2.Sxb4#
- 2.Rc5#
- 1...b3
- 2.Sb4#
- 2.Rd4#
- 2.Rc5#
- 1...d6
- 2.Sxb4#
- 2.Rd4#
- 1...Qxc4!
- threat
- 1.Rxe6?
- threat
- 2.Se7#
- 2.Re5#
- 2.Rd6#
- 1...Rxc6
- 2.Re5#
- 1...dxc6
- 2.Re5#
- 2.Rd6#
- 2.Qd8#
- 1...dxe6
- 2.Se7#
- 2.Qd8#
- 1...Qa1
- 2.Se7#
- 2.Rd6#
- 1...Qb2
- 2.Se7#
- 2.Rd6#
- 1...Qe2
- 2.Se7#
- 2.Rd6#
- 1...Re4
- 2.Se7#
- 2.Rd6#
- 1...Rc5
- 2.Re5#
- 2.Rd6#
- 1...d6
- 2.Se7#
- 2.Rxd6#
- 1...Rh4+!
- threat
- 1.Qa8?
- threat
- 2.Sxb4#
- 2.Se7#
- 1...Qxa8
- 2.dxc4#
- 1...Rcxc6
- 2.Rd4#
- 1...Rexc6
- 2.Re5#
- 1...Re7
- 2.Sxb4#
- 2.Sxe7#
- 1...b3
- 2.Sb4#
- 2.Se7#
- 2.dxc4#
- 1...dxc6!
- threat
- 1.fxe6?
- threat
- 2.Se7#
- 2.Re5#
- 2.Qg5#
- 1...Rxc6
- 2.Re5#
- 2.Qg5#
- 1...dxc6
- 2.Re5#
- 2.Qg5#
- 2.Qd8#
- 1...dxe6
- 2.Se7#
- 2.Re5#
- 2.Qd8#
- 1...g1Q
- 2.Se7#
- 2.Re5#
- 1...g1R
- 2.Se7#
- 2.Re5#
- 1...Qa1
- 2.Se7#
- 2.dxc4#
- 1...Qb2
- 2.Se7#
- 2.dxc4#
- 1...Qd2
- 2.Se7#
- 2.Re5#
- 2.dxc4#
- 1...Qe2
- 2.Se7#
- 2.Qg5#
- 1...Qf2
- 2.Se7#
- 2.Re5#
- 2.dxc4#
- 1...d6
- 2.Se7#
- 2.Qg5#
- 1...Rxe4!
- threat
- 1.Bxa2?
- Keys
- 1.Qxg2!
- threat
- 2.Rd4#
- 2.Re5#
- 1...Qxg2
- 2.dxc4#
- 1...Rcxe4
- 2.Sxb4#
- 1...Rexe4
- 2.Se7#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 1...Re5
- 2.Rd4#
- 2.Rxe5#
- threat
- 1.Qxg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 16
- Sets
- Q(a);N_GUARD::P(B),XR(d)
- R(d);N_GUARD::R1(C),XR(d)
- R(d);N_GUARD,XS(G)::R1(C)
- R(f);N_GUARD::R1(C),XR(f)
- R(f);N_GUARD,XS(G)::R1(C)
- R(f);N_GUARD,P_PINS(I)::S(G),XR(f)
- P(c);S_CUTQ(a)::P(B),XR(d)
- Tries
- Try
- B(A);P_PINR(d),XQ(a)
- Threat
- DUALS(3)
- Vars
- R(f);XR(C)::S(G),XP(c)
- Refutation
- P(c);N_SPINR(d)
- Try
- R(C);XR(d)
- Threat
- DUALS(3)
- Vars
- R(f);XS(G)::R1(C)
- P(g);XS(G)::R1(C)
- P(b);::S(G),XP(c)
- Q(a);::R1(C)
- Q(a);::S(G),XP(c)
- Refutation
- Q(a);XR(C)
- Try
- R(C);XR(f)
- Threat
- DUALS(3)
- Vars
- R(d);XS(G)::R1(C)
- Refutation
- R(d);CHECK
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XQ(K)::P(B),XR(d)
- R(d);N_GUARD,P_SPINR(d),XS(G)::R1(C)
- R(f);N_GUARD,P_SPINR(f),XS(G)::R1(C)
- Refutation
- P(g);P_SPINP(g),XS(G)
- Try
- P(E);XR(f)
- Threat
- DUALS(3)
- Refutation
- R(d);XR(C)
- Try
- Actual
- Q(K);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XQ(K)::P(B),XR(d)
- R(d);N_GUARD,P_SPINR(d),XR(C)::S(G),XP(c)
- R(f);N_GUARD,P_SPINR(f),XR(C)::S(G)
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).