MESON Chess Problem Database
Problem Display
PID: 252864 (8/Kp1Q4/1P2r2n/1PB1p2R/N3k3/1bpR3N/2P3P1/4q3 w - - 0 1)
Wirajaya, Daniel
Problemas, 2021
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxc3#
- 1...Qg3
- 2.Sxc3#
- 1...Qh4
- 2.Sxc3#
- 2.Re3#
- 1...Qa1
- 2.Re3#
- 1...Qb1
- 2.Sxc3#
- 2.Re3#
- 1...Qc1
- 2.Sxc3#
- 1...Qd1
- 2.Sxc3#
- 2.Re3#
- 1...Qf1
- 2.Sxc3#
- 2.Re3#
- 1...Qg1
- 2.Sxc3#
- 1...Qh1
- 2.Sxc3#
- 2.Re3#
- 1...Qe2
- 2.Sxc3#
- 1...Qe3
- 2.Sxc3#
- 2.Rxe3#
- 1...Bxc2
- 2.Qd5#
- 1...Bxa4
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Qf2
- Tries
- 1.Sf2+?
- 1...Kf4
- 2.Rf3#
- 2.g3#
- 1...Qxf2!
- 1...Kf4
- 1.Bg1?
- threat
- 2.Sc5#
- 1...Qxg1
- 2.Sxc3#
- 1...Bxa4
- 2.Qd5#
- 1...Qf2
- 2.Sxc3#
- 1...Qa1
- 2.Re3#
- 1...Qe3
- 2.Sxc3#
- 2.Rxe3#
- 1...Rc6!
- threat
- 1.Bf2?
- threat
- 2.Sc5#
- 1...Qxf2
- 2.Sxc3#
- 1...Bxa4
- 2.Qd5#
- 1...Qa1
- 2.Re3#
- 1...Qe3
- 2.Sxc3#
- 2.Rxe3#
- 1...Rc6!
- threat
- 1.Ba3?
- threat
- 2.Sc5#
- 1...Bxa4
- 2.Qd5#
- 1...Qf2
- 2.Sxc3#
- 1...Qg1
- 2.Sxc3#
- 1...Qe3
- 2.Sxc3#
- 1...Rc6!
- threat
- 1.Bd4?
- threat
- 2.Sc5#
- 1...Rd6
- 2.Rxe5#
- 1...Rc6
- 2.Rxe5#
- 1...Qa1
- 2.Re3#
- 1...Bxa4!
- threat
- 1.Bd6?
- threat
- 2.Sc5#
- 1...Bxa4
- 2.Qxb7#
- 1...Qf2
- 2.Sxc3#
- 1...Qg1
- 2.Sxc3#
- 1...Qe3
- 2.Sxc3#
- 1...Qa1!
- threat
- 1.Rd4+?
- 1...exd4
- 2.Qxd4#
- 1...Ke3!
- 1...exd4
- 1.Qxe6?
- threat
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxc2
- 2.Qc4#
- 2.Qd5#
- 1...Qg3
- 2.Sxc3#
- 1...Sg4
- 2.Qxg4#
- 2.Qf5#
- 2.Qg6#
- 1...Sf5
- 2.Qxf5#
- 1...Sf7
- 2.Qg4#
- 2.Qf5#
- 2.Qg6#
- 1...Bxe6!
- threat
- 1.Qxb7+?
- 1...Bd5
- 2.Qxd5#
- 1...Rc6!
- 1...Bd5
- 1.Qh7+?
- 1...Sf5
- 2.Qxf5#
- 1...Rg6!
- 1...Sf5
- 1.Sf2+?
- Keys
- 1.Be3!
- threat
- 2.Sc5#
- 1...Qxe3
- 2.Sxc3#
- 1...Bxa4
- 2.Qd5#
- 1...Rc6
- 2.Sg5#
- 1...Qa1
- 2.Sf2#
- threat
- 1.Be3!
This is a version of 251600
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINS(E)::R1(C)
- B(b);N_GUARD,XP(A)::QAB1(K)
- B(b);N_GUARD,XS(E)::QAB1(K)
- B(b);N_GUARD::QAB1(K),XB(b)
- Tries
- Try
- S(D);CHECK
- Refutation
- Q(a);XS(D)
- Try
- B(G);
- Threat
- S(E)
- Vars
- Q(a);N_GUARD,P_PINP(I),XB(G)::S(E),XP(c)
- B(b);N_GUARD,XS(E)::QAB1(K)
- Q(a);N_GUARD,P_PINP(I)::S(E),XP(c)
- Q(a);N_GUARD,P_PINS(E)::R1(C)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- S(E)
- Vars
- Q(a);N_GUARD,P_PINP(I),XB(G)::S(E),XP(c)
- B(b);N_GUARD,XS(E)::QAB1(K)
- Q(a);N_GUARD,P_PINS(E)::R1(C)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- S(E)
- Vars
- B(b);N_GUARD,XS(E)::QAB1(K)
- Q(a);N_GUARD,P_PINP(I)::S(E),XP(c)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- S(E)
- Vars
- R(f);N_GUARD::R1(H),XP(e)
- Q(a);N_GUARD,P_PINS(E)::R1(C)
- Refutation
- B(b);XS(E)
- Try
- B(G);
- Threat
- S(E)
- Vars
- B(b);N_GUARD,XS(E)::QAB(K),XP(h)
- Q(a);N_GUARD,P_PINP(I)::S(E),XP(c)
- Refutation
- Q(a);P_PINS(E)
- Try
- R(C);CHECK
- Vars
- P(e);OGATE,XR(C)::QAR1(K),XP(e)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(K);P_PINP(e),XR(f)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::S(E),XP(c)
- S(g);N_GUARD::QAB1(K),XS(g)
- Refutation
- B(b);N_SPINP(e),XQ(K)
- Try
- Q(K);CHECK,XP(h)
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAB1(K),XB(b)
- Refutation
- R(f);P_SPINR(f)
- Try
- Q(K);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAB1(K),XS(g)
- Refutation
- R(f);P_SPINR(f)
- Try
- Actual
- B(G);
- Threat
- S(E)
- Vars
- Q(a);N_GUARD,P_PINP(I),XB(G)::S(E),XP(c)
- B(b);N_GUARD,XS(E)::QAB1(K)
- R(f);::S(D)
- Q(a);N_GUARD,P_PINS(E)::S(D)
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).