MESON Chess Problem Database
Problem Display
PID: 174111 (1br1bQ2/7p/R1q3k1/n2N3p/5p1P/8/B1R1r2p/6nK w - - 0 1)
Braithwaite, Kenneth Holmes
Holladay, Edgar Dinwiddie
Boletim da UBP, 1986
#2
7 + 12
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Sxf4#
- 1...Qe6
- 2.Se7#
- 1...Qf6
- 2.Rxf6#
- 2.Qxf6#
- 1...Re1
- 2.Rg2#
- 1...Rg2
- 2.Se7#
- 2.Rxg2#
- 1...Re4
- 2.Rg2#
- 1...Re6
- 2.Rg2#
- 1...Re7
- 2.Rg2#
- 1...Bd6
- 2.Qf6#
- 1...Qd6
- Tries
- 1.Rxe2?
- threat
- 2.Bb1#
- 2.Rg2#
- 1...Qxa6
- 2.Se7#
- 2.Rg2#
- 1...Sxe2
- 2.Bb1#
- 1...Qf6
- 2.Se7#
- 2.Rxf6#
- 2.Qxf6#
- 1...Bf7
- 2.Bb1#
- 1...h6
- 2.Bb1#
- 1...Qb6
- 2.Se7#
- 2.Rg2#
- 1...Qd6
- 2.Sxf4#
- 2.Se7#
- 2.Rg2#
- 1...Qe6
- 2.Se7#
- 2.Rg2#
- 2.Rexe6#
- 2.Raxe6#
- 1...Bd6
- 2.Rg2#
- 2.Re6#
- 2.Qf6#
- 1...Sf3
- 2.Se7#
- 2.Bb1#
- 1...Sh3
- 2.Bb1#
- 1...f3
- 2.Se7#
- 2.Bb1#
- 1...Bd7!
- threat
- 1.Rcxc6+?
- 1...Re6
- 2.Se7#
- 2.Bb1#
- 2.Rxe6#
- 1...Bd6
- 2.Sxf4#
- 2.Qf6#
- 1...Bxc6
- 2.Qf6#
- 1...Sxc6
- 2.Qf6#
- 1...Rxc6!
- 1...Re6
- 1.Raxc6+?
- 1...Re6
- 2.Se7#
- 2.Rg2#
- 2.Rxe6#
- 1...Bd6
- 2.Sxf4#
- 2.Qf6#
- 1...Bxc6
- 2.Qf6#
- 1...Sxc6
- 2.Qf6#
- 1...Rxc6!
- 1...Re6
- 1.Qg8+?
- 1...Kh6
- 2.Qg5#
- 1...Kf5!
- 1...Kh6
- 1.Rxe2?
- Keys
- 1.Bb1!
- threat
- 2.Rxe2#
- 2.Rcxc6#
- 1...Qxa6
- 2.Rc6#
- 1...Rxc2
- 2.Bxc2#
- 1...Qf6
- 2.Rxf6#
- 2.Qxf6#
- 1...Qb6
- 2.Rc6#
- 1...Qd6
- 2.Sxf4#
- 1...Qe6
- 2.Se7#
- 1...Re1
- 2.Rg2#
- 2.Rcxc6#
- 1...Rd2
- 2.Rxd2#
- 2.Rcxc6#
- 1...Rf2
- 2.Rd2#
- 2.Re2#
- 2.Rxf2#
- 2.Rcxc6#
- 1...Rg2
- 2.Se7#
- 2.Rd2#
- 2.Re2#
- 2.Rf2#
- 2.Rxg2#
- 2.Rcxc6#
- 1...Re3
- 2.Rg2#
- 2.Rcxc6#
- 1...Re4
- 2.Rg2#
- 1...Re5
- 2.Rg2#
- 2.Rcxc6#
- 1...Re6
- 2.Rg2#
- 2.Rcxc6#
- 1...Re7
- 2.Rg2#
- 2.Rcxc6#
- 1...Bd6
- 2.Qf6#
- 1...Bd7
- 2.Rcxc6#
- 1...Sc4
- 2.Rxe2#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- Q(g);N_PINS(E)::S(E),XP(d)
- Q(g);N_PINS(E)::S(E)
- R(b);OGATE::R(C)
- R(b);N_PINS(E),OGATE::R(C)
- R(b);N_SPINQ(g),OGATE::R(C)
- B(j);N_SPINQ(g),S_CUTQ(g)::QAR1(G)
- Tries
- Try
- R(C);XR(b)
- Threat
- DUALS(2)
- Vars
- S(a);XR(C)::B(B)
- B(l);::B(B)
- P(i);::B(B)
- S(a);::B(B)
- Refutation
- B(l);
- Try
- R(C);CHECK,N_SPINS(E),XQ(g)
- Vars
- B(l);P_PINS(E),P_SPINB(l),XR(C)::QAR1(G)
- S(e);P_SPINS(e),XR(C)::QAR1(G)
- Refutation
- R(k);P_SPINR(k),XR(C)
- Try
- R(F);CHECK,N_SPINS(E),XQ(g)
- Vars
- B(l);P_PINS(E),XR(F)::QAR1(G)
- S(e);XR(F)::QAR1(G)
- Refutation
- R(k);XR(F)
- Try
- Q(G);CHECK
- Vars
- K(h);OGATE,P-FLIGHT::QAB1(G)
- Refutation
- K(h);N_SPINQ(g),S_FLIGHT
- Try
- Actual
- B(B);
- Threat
- DUALS(2)
- Vars
- Q(g);N_PINS(E),N_SPINQ(g),XR(F)::B(B)+R(C),DCHECK
- R(b);OGATE,P_SPINR(b),XR(C)::B(B),XR(b)
- Q(g);N_PINS(E)::B(B)+R(C),DCHECK
- Q(g);N_PINS(E)::S(E),XP(d)
- Q(g);N_PINS(E)::S(E)
- R(b);N_PINS(E),OGATE::R(C)
- B(j);N_SPINQ(g),S_CUTQ(g)::QAR1(G)
- B(l);::B(B)+R(C),DCHECK,XQ(g)
- S(e);::B(B)+R(C),XR(b)
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).