MESON Chess Problem Database
Problem Display
PID: 228663 (3N4/4N1R1/1r2pp1n/R4B2/2r2k2/1qQ2P1P/2PP2K1/8 w - - 0 1)
Brugge, Joachim
Troll, 2020
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qe3#
- 1...Qxc2
- 2.Qe3#
- 1...Qa4
- 2.Qe3#
- 1...Qb1
- 2.Qe3#
- 2.Qxc4#
- 1...Qb2
- 2.Qe3#
- 1...Qa3
- 2.Qxc4#
- 1...Qb4
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Rd4
- 2.Qxd4#
- 1...Rc5
- 2.Qd4#
- 1...Rcc6
- 2.Qd4#
- 1...Rc7
- 2.Qd4#
- 1...Rc8
- 2.Qd4#
- 1...Rb4
- 2.Sxe6#
- 1...Rb5
- 2.Sxe6#
- 1...Rb7
- 2.Sxe6#
- 1...Rb8
- 2.Sxe6#
- 1...Sg4
- 2.Rxg4#
- 1...Sxf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...exf5
- 2.Sd5#
- 1...Qa2
- Tries
- 1.Sd5+?
- 1...Kxf5
- 2.Qxf6#
- 1...exd5!
- 1...Kxf5
- 1.Bd3?
- threat
- 2.Sg6#
- 1...Rc5
- 2.Qd4#
- 1...Rb5
- 2.Sxe6#
- 1...Sf5
- 2.Rg4#
- 1...e5
- 2.Sd5#
- 1...f5
- 2.Qe5#
- 1...Qb5!
- threat
- 1.Bg4?
- threat
- 2.Sg6#
- 1...Qxc2
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Rc5
- 2.Qd4#
- 1...Rb5
- 2.Sxe6#
- 1...e5
- 2.Sd5#
- 1...f5
- 2.Qe5#
- 1...Sf5!
- threat
- 1.Bxe6?
- threat
- 2.Sd5#
- 2.Sg6#
- 1...Qxc2
- 2.Sd5#
- 2.Qe3#
- 1...Qxc3
- 2.Sg6#
- 1...Rxc3
- 2.Sg6#
- 1...Rxe6
- 2.Sg6#
- 2.Sxe6#
- 1...Qb5
- 2.Qe3#
- 1...Ra4
- 2.Sg6#
- 1...Rcb4
- 2.Sg6#
- 1...Rd4
- 2.Sg6#
- 2.Qxd4#
- 1...Re4
- 2.Sg6#
- 1...Rc5
- 2.Qd4#
- 1...Rcc6
- 2.Sg6#
- 2.Qd4#
- 1...Rc7
- 2.Sg6#
- 2.Qd4#
- 1...Rc8
- 2.Sg6#
- 2.Qd4#
- 1...Rd6
- 2.Sg6#
- 1...Sf5
- 2.Sd5#
- 2.Rxf5#
- 2.Rg4#
- 1...f5
- 2.Sd5#
- 2.Qe5#
- 1...Rb5!
- threat
- 1.Rg3?
- threat
- 2.Sg6#
- 1...Sg4
- 2.Rxg4#
- 1...Rb5
- 2.Sxe6#
- 1...Qb5
- 2.Qe3#
- 1...Rc5
- 2.Qd4#
- 1...e5!
- threat
- 1.Qxf6?
- threat
- 2.Sg6#
- 2.Qe5#
- 2.Qg5#
- 2.Qxh6#
- 1...Sxf5
- 2.Sg6#
- 2.Rg4#
- 2.Qe5#
- 2.Qg5#
- 1...exf5
- 2.Sd5#
- 2.Sg6#
- 2.Qe5#
- 2.Qg5#
- 1...Rb5
- 2.Sg6#
- 2.Sxe6#
- 1...Qb2
- 2.Sg6#
- 2.Qg5#
- 2.Qxh6#
- 1...Qc3
- 2.Sg6#
- 2.Qg5#
- 2.Qxh6#
- 1...Qe3
- 2.Sg6#
- 2.Qg5#
- 2.Qxh6#
- 1...Qb5
- 2.Sg6#
- 1...Re4
- 2.Sg6#
- 2.Qg5#
- 2.Qxh6#
- 1...Rc5
- 2.Sg6#
- 2.Qd4#
- 1...Sg4
- 2.Sg6#
- 2.Bxg4#
- 2.Rxg4#
- 2.Qg5#
- 1...Sf7
- 2.Sg6#
- 2.Bd3#
- 2.Be4#
- 2.Bg4#
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 2.Rg4#
- 2.Qh4#
- 1...Sg8
- 2.Sg6#
- 2.Rg4#
- 2.Qh4#
- 2.Qe5#
- 2.Qg5#
- 1...e5
- 2.Sd5#
- 2.Sg6#
- 2.Qxe5#
- 2.Qg5#
- 1...Qxf3+!
- threat
- 1.h4?
- threat
- 2.Sg6#
- 1...Rb5
- 2.Sxe6#
- 1...Qb5
- 2.Qe3#
- 1...Rc5
- 2.Qd4#
- 1...e5!
- threat
- 1.Sd5+?
- Keys
- 1.Bh7!
- threat
- 2.Sg6#
- 1...Qxc2
- 2.Qe3#
- 1...Rb5
- 2.Sxe6#
- 1...Qb5
- 2.Qe3#
- 1...Rc5
- 2.Qd4#
- 1...Sf5
- 2.Rg4#
- 1...e5
- 2.Sd5#
- 1...f5
- 2.Qe5#
- threat
- 1.Bh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 16
- Sets
- Q(a);N_GUARD::QAB1(D)
- Q(a);N_GUARD,P_PINP(B),XP(A)::QAB1(D)
- Q(a);N_GUARD::QAR(D),XR(b)
- R(b);N_GUARD::QAR2(D),XR(b)
- R(b);N_GUARD::QAR2(D)
- R(d);N_GUARD::S(K),XP(e)
- S(g);N_GUARD::R1(J),XS(g)
- S(g);N_GUARD,XB(H)::R1(J)
- S(g);N_GUARD::R1(J)
- P(e);N_GUARD,SBLOCK,XB(H)::S(I)
- Tries
- Try
- S(I);CHECK
- Vars
- K(c);P-FLIGHT,XB(H)::QAR1(D),XP(f)
- Refutation
- P(e);XS(I)
- Try
- B(H);
- Threat
- S(I)
- Vars
- R(b);N_GUARD::QAR2(D)
- R(d);N_GUARD::S(K),XP(e)
- S(g);N_GUARD::R1(J)
- P(e);N_GUARD::S(I)
- P(f);N_GUARD::QAB1(D)
- Refutation
- Q(a);
- Try
- B(H);
- Threat
- S(I)
- Vars
- Q(a);N_GUARD,P_PINP(B),XP(A)::QAB1(D)
- Q(a);N_GUARD::QAB1(D)
- R(b);N_GUARD::QAR2(D)
- R(d);N_GUARD::S(K),XP(e)
- P(e);N_GUARD::S(I)
- P(f);N_GUARD::QAB1(D)
- Refutation
- S(g);
- Try
- B(H);XP(e)
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(D)::S(I)
- R(b);XQ(D)::S(I)
- Q(a);N_GUARD::QAB1(D)
- R(b);::S(I)
- R(b);N_GUARD::QAR2(D)
- R(d);::S(I)
- Refutation
- R(d);
- Try
- R(J);
- Threat
- S(I)
- Vars
- S(g);N_GUARD::R1(J),XS(g)
- R(d);N_GUARD::S(K),XP(e)
- Q(a);N_GUARD::QAB1(D)
- R(b);N_GUARD::QAR2(D)
- Refutation
- P(e);
- Try
- Q(D);XP(f)
- Threat
- DUALS(4)
- Vars
- Q(a);::S(I)
- Refutation
- Q(a);CHECK,XP(E)
- Try
- P(F);
- Threat
- S(I)
- Vars
- R(d);N_GUARD::S(K),XP(e)
- Q(a);N_GUARD::QAB1(D)
- R(b);N_GUARD::QAR2(D)
- Refutation
- P(e);
- Try
- Actual
- B(H);
- Threat
- S(I)
- Vars
- Q(a);N_GUARD,P_PINP(B),XP(A)::QAB1(D)
- R(d);N_GUARD::S(K),XP(e)
- Q(a);N_GUARD::QAB1(D)
- R(b);N_GUARD::QAR2(D)
- S(g);N_GUARD::R1(J)
- P(e);N_GUARD::S(I)
- P(f);N_GUARD::QAB1(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).