MESON Chess Problem Database
Problem Display
PID: 250890 (1q6/1P2RpPp/r3b2K/6RN/1QNBk3/2P1pr2/2P4p/1n5B w - - 0 1)
Shanshin, Valery Yurevich
Uralski Problemist, 2011
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Rxe5#
- 1...Qa7
- 2.Re5#
- 1...Qxb7
- 2.Re5#
- 1...Qa8
- 2.Re5#
- 1...Qc8
- 2.Re5#
- 1...Qd8
- 2.Re5#
- 1...Qe8
- 2.Re5#
- 1...Qf8
- 2.Re5#
- 1...Qg8
- 2.Re5#
- 1...Qh8
- 2.Re5#
- 1...Rd6
- 2.Re5#
- 1...Qe5
- Tries
- 1.Sd2+?
- 1...exd2
- 2.Bg1#
- 2.Bf2#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 1...Sxd2!
- 1...exd2
- 1.Sd6+?
- 1...Rxd6
- 2.Re5#
- 1...Qxd6!
- 1...Rxd6
- 1.Bxe3?
- threat
- 2.Sf6#
- 1...Qe5
- 2.Rxe5#
- 1...f6
- 2.Sxf6#
- 1...Qf4!
- threat
- 1.Bc5?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Qxb7
- 2.Sd2#
- 2.Sb6#
- 2.Sd6#
- 2.Re5#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qd8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Ra3
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Ra4
- 2.Sd2#
- 2.Sd6#
- 1...Ra5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sxa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rb6
- 2.Sd2#
- 2.Sxb6#
- 2.Sd6#
- 1...Rd6
- 2.Sd2#
- 2.Sxd6#
- 2.Re5#
- 1...Sd2
- 2.Sxd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sxa3#
- 2.Sd6#
- 1...e2
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...f5!
- threat
- 1.Bb6?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sd6#
- 1...Rxb6
- 2.Sd2#
- 2.Sxb6#
- 2.Sd6#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qc7
- 2.Sd2#
- 2.Sd6#
- 1...Qc8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Qd8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Ra3
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sd6#
- 1...Ra4
- 2.Sd2#
- 2.Sd6#
- 1...Ra5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sxa5#
- 2.Sd6#
- 1...Sd2
- 2.Sxd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sxa3#
- 2.Sd6#
- 1...e2
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 1...f5!
- threat
- 1.Bf6?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Qxb7
- 2.Sd2#
- 2.Sb6#
- 2.Sd6#
- 2.Re5#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qa7
- 2.Sd2#
- 2.Sb6#
- 2.Sd6#
- 2.Re5#
- 1...Qc7
- 2.Sd2#
- 2.Sd6#
- 1...Qc8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Qd8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Ra3
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Ra4
- 2.Sd2#
- 2.Sd6#
- 1...Ra5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rb6
- 2.Sd2#
- 2.Sxb6#
- 2.Sd6#
- 1...Rc6
- 2.Sd2#
- 2.Sd6#
- 1...Rd6
- 2.Sd2#
- 2.Sxd6#
- 2.Re5#
- 1...Sd2
- 2.Sxd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sxa3#
- 2.Sd6#
- 1...e2!
- threat
- 1.Ba7?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Qxa7
- 2.Sd2#
- 2.Sb6#
- 2.Sd6#
- 2.Re5#
- 1...Qxb7
- 2.Sd2#
- 2.Sb6#
- 2.Sd6#
- 2.Re5#
- 1...Rxa7
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qc7
- 2.Sd2#
- 2.Sd6#
- 1...Qc8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Qd8
- 2.Sd2#
- 2.Sd6#
- 2.Re5#
- 1...Ra3
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Ra4
- 2.Sd2#
- 2.Sd6#
- 1...Ra5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sxa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rb6
- 2.Sd2#
- 2.Sxb6#
- 2.Sd6#
- 1...Rc6
- 2.Sd2#
- 2.Sd6#
- 1...Rd6
- 2.Sd2#
- 2.Sxd6#
- 2.Re5#
- 1...Sd2
- 2.Sxd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sxa3#
- 2.Sd6#
- 1...e2
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 1...f5!
- threat
- 1.Qd6?
- threat
- 2.Sg3#
- 2.Sf6#
- 2.Re5#
- 2.Qd5#
- 1...Qxb7
- 2.Sg3#
- 2.Sf6#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...Rxd6
- 2.Re5#
- 1...Sxc3
- 2.Sg3#
- 2.Sf6#
- 2.Re5#
- 1...Qd8
- 2.Sg3#
- 2.Sf6#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...Ra5
- 2.Sg3#
- 2.Sf6#
- 1...f5
- 2.Sg3#
- 2.Sf6#
- 2.Rxe6#
- 1...f6
- 2.Sg3#
- 2.Sxf6#
- 2.Rxe6#
- 2.Qd5#
- 1...Qxd6!
- threat
- 1.Sd2+?
- Keys
- 1.Be5!
- threat
- 2.Sf6#
- 1...Bh3+
- 2.Sb6#
- 1...Bxc4+
- 2.Bd6#
- 1...Bg4+
- 2.Sb6#
- 1...Bd5+
- 2.Sd6#
- 1...Bf5+
- 2.Sb6#
- 1...Bd7+
- 2.Sb6#
- 1...Bc8+
- 2.Sb6#
- 1...Kd5
- 2.Bxf3#
- 1...Qxe5
- 2.Rxe5#
- 1...f6
- 2.Sxf6#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 10
- Sets
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- Q(j);N_GUARD::R1(G)
- Q(j);N_GUARD,XP(J)::R1(G)
- Q(j);N_GUARD,P_PINP(L)::R1(G)
- R(f);S_CUTQ(j)::R1(G)
- Tries
- Try
- S(E);CHECK
- Refutation
- S(a);XS(E)
- Try
- S(E);CHECK
- Vars
- R(f);XS(E)::R1(G)
- Refutation
- Q(j);XS(E)
- Try
- B(F);XP(c)
- Threat
- S(H)
- Vars
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- P(h);::S(H),XP(h)
- Refutation
- Q(j);P_PINR(G)
- Try
- B(F);
- Threat
- DUALS(7)
- Vars
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- Refutation
- P(h);
- Try
- B(F);
- Threat
- DUALS(6)
- Vars
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- Refutation
- P(h);
- Try
- B(F);
- Threat
- DUALS(6)
- Vars
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- Refutation
- P(c);
- Try
- B(F);
- Threat
- DUALS(7)
- Vars
- Q(j);N_GUARD,N_SPINB(g)::R1(G),XQ(j)
- Refutation
- P(h);
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- R(f);XQ(D)::R1(G)
- Refutation
- Q(j);XQ(D)
- Try
- Actual
- B(F);N_PINB(g)
- Threat
- S(H)
- Vars
- B(g);CHECK,N_GUARD::QAR(D)+S(E)
- B(g);CHECK,OGATEB,P_SPINB(g),XS(E)::R(K)+B(F)
- B(g);CHECK,SBLOCK::QAR(D)+S(E),DCHECK
- K(e);N_GUARD,S_FLIGHT::B(A),XR(d)
- Q(j);OGATE,XB(F)::R1(G),XQ(j)
- P(h);::S(H),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).