MESON Chess Problem Database
Problem Display
PID: 254374 (B7/8/4nK1p/2p1p1p1/2RPpPQ1/NNpkb1p1/1p1Bn2r/3R4 w - - 0 1)
Maleika, Gerhard
Problemas, 2021
#2
10 + 13
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Bc1#
- 1...Bf2
- 2.Bc1#
- 1...Bxd4
- 2.Bc1#
- 1...Bxf4
- 2.Bxf4#
- 1...Sc1
- 2.Rxc3#
- 1...Sg1
- 2.Rxc3#
- 1...S2xd4
- 2.Rxc3#
- 1...S2xf4
- 2.Rxc3#
- 1...S6xd4
- 2.Sxc5#
- 1...S6xf4
- 2.Sxc5#
- 1...Sc7
- 2.Sxc5#
- 1...Sg7
- 2.Sxc5#
- 1...Sd8
- 2.Sxc5#
- 1...Sf8
- 2.Sxc5#
- 1...Bg1
- Tries
- 1.Qxe2+?
- 1...Rxe2
- 2.Rxc3#
- 1...Kxe2!
- 1...Rxe2
- 1.Qf3?
- threat
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...S2xd4
- 2.Bxe4#
- 2.Rxc3#
- 2.Qxe3#
- 1...S2xf4
- 2.Bxe4#
- 2.Rxc3#
- 2.Qxe3#
- 1...cxd2
- 2.Bxe4#
- 2.Rxd2#
- 2.Qxe4#
- 1...cxd4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Bxe4#
- 2.Qxe4#
- 1...exd4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Bxe4#
- 2.Qxe4#
- 1...exf4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Bxe4#
- 2.Qxe4#
- 1...gxf4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Bxe4#
- 2.Qxe4#
- 1...b1Q
- 2.Bc1#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...b1S
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...b1R
- 2.Bc1#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...Rh1
- 2.Be1#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...Sc1
- 2.Bxe4#
- 2.Rxc3#
- 2.Qxe3#
- 1...Sg1
- 2.Bxe4#
- 2.Rxc3#
- 2.Qxe3#
- 1...c2
- 2.Bxe4#
- 2.Qxe4#
- 2.Qxe3#
- 1...exf3!
- threat
- 1.Qxg3?
- threat
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 2.Qxe3#
- 1...S2xd4
- 2.Qxe3#
- 1...S2xf4
- 2.Qxe3#
- 1...cxd2
- 2.Rxd2#
- 1...cxd4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 1...exd4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 1...exf4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 1...gxf4
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 1...Sc1
- 2.Qxe3#
- 1...Sg1
- 2.Qxe3#
- 1...b1Q
- 2.Bc1#
- 2.Qxe3#
- 1...b1S
- 2.Qxe3#
- 1...b1R
- 2.Bc1#
- 2.Qxe3#
- 1...Rh1
- 2.Be1#
- 2.Qxe3#
- 1...Rh3
- 2.Bc1#
- 2.Be1#
- 2.Bxc3#
- 2.Bxe3#
- 1...c2
- 2.Qxe3#
- 1...Sxg3!
- threat
- 1.dxe5?
- threat
- 2.Bxe4#
- 1...Bd4
- 2.Bc1#
- 1...S2d4
- 2.Rxc3#
- 1...S6d4
- 2.Sxc5#
- 1...Bxd2!
- threat
- 1.fxe5?
- threat
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxd2
- 2.Qxe4#
- 1...S2xd4
- 2.Bxe4#
- 2.Rxc3#
- 1...Rh4
- 2.Bxe4#
- 1...Bf4
- 2.Bxf4#
- 1...Sc1
- 2.Bxe4#
- 2.Rxc3#
- 1...Sg1
- 2.Bxe4#
- 2.Rxc3#
- 1...S2f4
- 2.Rxc3#
- 1...S6f4
- 2.Sxc5#
- 1...Rf2+!
- threat
- 1.fxg5?
- threat
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxg5+
- 2.Bxg5#
- 1...Bxd2
- 2.Qxe4#
- 1...S2xd4
- 2.Bxe4#
- 2.Rxc3#
- 1...Sxg5
- 2.Sxc5#
- 1...Rh4
- 2.Bxe4#
- 1...Bf4
- 2.Bxf4#
- 1...Sc1
- 2.Bxe4#
- 2.Rxc3#
- 1...Sg1
- 2.Bxe4#
- 2.Rxc3#
- 1...S2f4
- 2.Rxc3#
- 1...S6f4
- 2.Sxc5#
- 1...Rf2+!
- threat
- 1.Qxe2+?
- Keys
- 1.f5!
- threat
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxd2
- 2.Qxe4#
- 1...S2xd4
- 2.Bxe4#
- 2.Rxc3#
- 1...Rh4
- 2.Bxe4#
- 1...Bf4
- 2.Bxf4#
- 1...Sc1
- 2.Bxe4#
- 2.Rxc3#
- 1...Sg1
- 2.Bxe4#
- 2.Rxc3#
- 1...S2f4
- 2.Rxc3#
- 1...S6f4
- 2.Sxc5#
- threat
- 1.f5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- B(f);N_GUARD::R(A)+B(B)
- B(f);N_GUARD,XP(F)::R(A)+B(B)
- B(f);OGATE,XP(G)::R(A)+B(B),XB(f)
- S(b);N_GUARD::R1(E),XP(d)
- S(b);N_GUARD,XP(F)::R1(E),XP(d)
- S(b);N_GUARD,XP(G)::R1(E),XP(d)
- S(l);N_GUARD,XP(F)::S(D),XP(i)
- S(l);N_GUARD,XP(G)::S(D),XP(i)
- S(l);N_GUARD::S(D),XP(i)
- Tries
- Try
- Q(H);CHECK,XS(b)
- Vars
- R(c);SBLOCK,XQ(H)::R1(E),XP(d)
- Refutation
- K(e);S_FLIGHT,XQ(H)
- Try
- Q(H);P_PINB(f)
- Threat
- DUALS(7)
- Refutation
- P(h);N_SPINB(f),XQ(H)
- Try
- Q(H);P_PINB(f),XP(g)
- Threat
- DUALS(5)
- Vars
- S(b);XP(F)::QAR1(H),XB(f)
- S(b);XP(G)::QAR1(H),XB(f)
- P(d);OGATE,P_SPINP(d),XB(B)::R1(A),XP(d)
- S(b);::QAR1(H),XB(f)
- P(a);::QAR1(H),XB(f)
- P(d);::QAR1(H),XB(f)
- Refutation
- S(b);N_SPINB(f),XQ(H)
- Try
- P(F);XP(j)
- Threat
- B(J),XP(h)
- Vars
- B(f);N_GUARD,P_PINP(F)::R(A)+B(B)
- S(b);N_GUARD::R1(E),XP(d)
- S(l);N_GUARD,S_CUTB(f)::S(D),XP(i)
- Refutation
- B(f);P_SPINB(f),XB(B)
- Try
- P(G);XP(j)
- Threat
- DUALS(2)
- Vars
- B(f);P_SPINB(f),XB(B)::QAB1(H),XP(h)
- R(c);::B(J),XP(h)
- B(f);OGATE::R(A)+B(B),XB(f)
- S(b);N_GUARD::R1(E),XP(d)
- S(l);N_GUARD::S(D),XP(i)
- Refutation
- R(c);CHECK
- Try
- P(G);XP(k)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,OGATE,XP(G)::R(A)+B(B),XB(f)
- B(f);P_SPINB(f),XB(B)::QAB1(H),XP(h)
- S(l);N_GUARD,XP(G)::S(D),XP(i)
- R(c);::B(J),XP(h)
- B(f);OGATE::R(A)+B(B),XB(f)
- S(b);N_GUARD::R1(E),XP(d)
- S(l);N_GUARD::S(D),XP(i)
- Refutation
- R(c);CHECK
- Try
- Actual
- P(G);
- Threat
- DUALS(2)
- Vars
- B(f);P_SPINB(f),XB(B)::QAB1(H),XP(h)
- R(c);::B(J),XP(h)
- B(f);OGATE::R(A)+B(B),XB(f)
- S(b);N_GUARD::R1(E),XP(d)
- S(l);N_GUARD::S(D),XP(i)
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).