MESON Chess Problem Database
Problem Display
PID: 147805 (1Q4r1/7B/6r1/1N1p1q2/3Pkp2/3R2P1/3KP2B/b4N2 w - - 0 1)
Popovski, Aleksandr
The Problemist Supplement, 2012
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qg4
- 2.Sd6#
- 2.Qe5#
- 1...Qe6
- 2.Qxf4#
- 1...Qd7
- 2.Qxf4#
- 2.Qe5#
- 1...Qc8
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd6#
- 2.Qxf4#
- 1...Qf7
- 2.Sd6#
- 2.Qe5#
- 1...Qf8
- 2.Qe5#
- 1...Rxg3
- 2.Sd6#
- 2.Qe5#
- 1...Rg4
- 2.Sd6#
- 2.Qe5#
- 1...Rg5
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Ra6
- 2.Qxf4#
- 2.Qe5#
- 1...Rb6
- 2.Qxf4#
- 2.Qe5#
- 1...Rc6
- 2.Qxf4#
- 2.Qe5#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qxf4#
- 1...Rf6
- 2.Qxf4#
- 2.Qe5#
- 1...Rh6
- 2.Qxf4#
- 2.Qe5#
- 1...R6g7
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Bc3+
- 2.Sxc3#
- 1...Bxd4
- 2.Rxd4#
- 1...fxg3
- 2.Re3#
- 1...f3
- 2.Re3#
- 1...Qh3
- Tries
- 1.Kd1?
- threat
- 2.Sd2#
- 1...Qh3
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qg4
- 2.Sd6#
- 2.Qe5#
- 1...Qe6
- 2.Qxf4#
- 1...Qd7
- 2.Qxf4#
- 2.Qe5#
- 1...Qc8
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd6#
- 2.Qxf4#
- 1...Qf7
- 2.Sd6#
- 2.Qe5#
- 1...Qf8
- 2.Qe5#
- 1...Bc3
- 2.Sxc3#
- 1...Qf6!
- threat
- 1.Ke1?
- threat
- 2.Sd2#
- 1...Bc3+
- 2.Sxc3#
- 1...Qh3
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qg4
- 2.Sd6#
- 2.Qe5#
- 1...Qe6
- 2.Qxf4#
- 1...Qd7
- 2.Qxf4#
- 2.Qe5#
- 1...Qc8
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd6#
- 2.Qxf4#
- 1...Qf7
- 2.Sd6#
- 2.Qe5#
- 1...Qf8
- 2.Qe5#
- 1...Qf6!
- threat
- 1.Bxg6?
- threat
- 2.Sd6#
- 2.Qxf4#
- 2.Qe5#
- 1...Bc3+
- 2.Sxc3#
- 1...Qxg6
- 2.Qxf4#
- 2.Qe5#
- 1...Rxb8
- 2.Sd6#
- 1...Bxd4
- 2.Rxd4#
- 2.Qxf4#
- 1...fxg3
- 2.Sxg3#
- 2.Re3#
- 2.Qe5#
- 1...Rd8
- 2.Qxf4#
- 2.Qe5#
- 1...Re8
- 2.Sd6#
- 2.Qxf4#
- 2.Qxe8#
- 1...f3
- 2.Sd6#
- 2.Re3#
- 2.Qf4#
- 2.Qe5#
- 2.exf3#
- 1...Rxg6!
- threat
- 1.Qe8+?
- 1...Qe6
- 2.Sd6#
- 2.Qxe6#
- 1...Qe5
- 2.Sd6#
- 2.Qxe5#
- 1...Re6
- 2.Sd6#
- 2.Qxe6#
- 1...Rxe8!
- 1...Qe6
- 1.Kd1?
- Keys
- 1.gxf4!
- threat
- 2.Re3#
- 1...Qxf4+
- 2.Qxf4#
- 1...Bc3+
- 2.Sxc3#
- 1...Bxd4
- 2.Rxd4#
- 1...Qh3
- 2.Sd6#
- 2.Qe5#
- 1...Qg4
- 2.Sd6#
- 2.Qe5#
- 1...Qe6
- 2.Sg3#
- 1...Qd7
- 2.Sg3#
- 2.Qe5#
- 1...Qc8
- 2.Sg3#
- 2.Sd6#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sg3#
- 2.Sd6#
- 1...Qf6
- 2.Sg3#
- 1...Qf7
- 2.Sg3#
- 2.Sd6#
- 2.Qe5#
- 1...Qf8
- 2.Sg3#
- 2.Qe5#
- 1...Rg3
- 2.Qe5#
- threat
- 1.gxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XP(c)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XQ(e)
- Q(e);P_SPINR(f)::S(H)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J)
- R(f);N_GUARD,P_SPINQ(e)::S(H),XR(f)
- R(f);P_SPINQ(e)::QAR1(J),XP(c)
- B(a);CHECK,N_GUARD::S(H),XB(a)
- B(a);OGATE,XP(G)::R1(E),XB(a)
- P(c);N_GUARD,XP(F)::R1(E)
- P(c);N_GUARD::R1(E)
- Tries
- Try
- K(B);P-FLIGHT
- Threat
- S(A)
- Vars
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XP(c)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XQ(e)
- Q(e);P_SPINR(f)::S(H)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J)
- B(a);N_GUARD::S(H),XB(a)
- Refutation
- Q(e);P_SPINR(f)
- Try
- K(B);S_FLIGHT
- Threat
- S(A)
- Vars
- B(a);CHECK,N_GUARD::S(H),XB(a)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XP(c)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XQ(e)
- Q(e);P_SPINR(f)::S(H)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J)
- Refutation
- Q(e);P_SPINR(f)
- Try
- B(I);P_PINQ(e),XR(f)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::S(H),XB(a)
- R(g);XQ(J)::S(H)
- Refutation
- R(g);N_SPINQ(e),XB(I)
- Try
- Q(J);CHECK
- Refutation
- R(g);XQ(J)
- Try
- Actual
- P(F);XP(c)
- Threat
- R1(E)
- Vars
- Q(e);CHECK,OGATE,P_SPINR(f),XP(F)::QAR1(J),XQ(e)
- B(a);CHECK,N_GUARD::S(H),XB(a)
- B(a);OGATE,XP(G)::R1(E),XB(a)
- Q(e);P_SPINR(f)::S(A)
- Q(e);N_GUARD,P_SPINR(f)::QAR1(J),XQ(e)
- Q(e);P_PINP(F),P_SPINR(f)::S(H)
- R(f);P_SPINQ(e)::QAR1(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).