MESON Chess Problem Database
Problem Display
PID: 210424 (3BR3/b6N/3rn1pp/1Q6/4nkP1/2p1R2P/3P2P1/1b1N2K1 w - - 0 1)
Brummelman, Derk Hendrikus (AKA Bruma, DH)
Probleemblad, 1945
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rf3#
- 1...Rb6
- 2.Rf3#
- 1...Bb8
- 2.Rf3#
- 1...Sxd2
- 2.Qe5#
- 2.g3#
- 1...Sf2
- 2.Qe5#
- 2.g3#
- 1...Sg3
- 2.Qe5#
- 1...S4c5
- 2.Qf1#
- 2.g3#
- 1...S4g5
- 2.Qe5#
- 2.g3#
- 1...Sf6
- 2.Qf1#
- 2.Qe5#
- 2.g3#
- 1...Sd4
- 2.Qe5#
- 1...S6c5
- 2.Rf3#
- 1...S6g5
- 2.Qe5#
- 1...Sc7
- 2.Qe5#
- 1...Sg7
- 2.Qe5#
- 1...Sxd8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...g5
- 2.Qf5#
- 1...Rd4
- Tries
- 1.Sf8?
- threat
- 2.Sxg6#
- 1...Sxd2
- 2.Qe5#
- 2.g3#
- 1...Sxd8
- 2.Qe5#
- 1...Sxf8
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 2.g3#
- 1...Sg3
- 2.Qe5#
- 1...S4c5
- 2.Qf1#
- 2.g3#
- 1...S4g5
- 2.Qe5#
- 2.g3#
- 1...Sf6
- 2.Qe5#
- 2.g3#
- 1...Sd4
- 2.Qe5#
- 1...S6c5
- 2.Rf3#
- 1...S6g5
- 2.Qe5#
- 1...Sc7
- 2.Qe5#
- 1...Sg7
- 2.Qe5#
- 1...g5
- 2.Sg6#
- 2.Qf5#
- 1...Bxe3+!
- threat
- 1.Bg5+?
- 1...S4xg5
- 2.Qe5#
- 2.g3#
- 1...S6xg5
- 2.Qe5#
- 1...hxg5!
- 1...S4xg5
- 1.Rf8+?
- 1...Sf6
- 2.Qf1#
- 2.Qe5#
- 2.g3#
- 1...Sxf8!
- 1...Sf6
- 1.Qf1+?
- 1...Sf2
- 2.Qxf2#
- 2.g3#
- 1...Ke5!
- 1...Sf2
- 1.d4?
- threat
- 2.Rf3#
- 2.Qe5#
- 1...Rxd4
- 2.Rf3#
- 1...Sxd4
- 2.Qe5#
- 1...Rd5
- 2.Rf3#
- 1...Bc5
- 2.Rf3#
- 1...Sd2
- 2.Qe5#
- 2.g3#
- 1...Sf2
- 2.Qe5#
- 2.g3#
- 1...Sg3
- 2.Qe5#
- 1...S4c5
- 2.Qf1#
- 2.g3#
- 1...S4g5
- 2.Qe5#
- 2.g3#
- 1...Sf6
- 2.Qf1#
- 2.Qe5#
- 2.g3#
- 1...S6c5
- 2.Rf3#
- 1...S6g5
- 2.Qe5#
- 1...Bxd4!
- threat
- 1.Sf8?
- Keys
- 1.g3+!
- 1...Sxg3
- 2.Qe5#
- 1...Sxg3
- 1.g3+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 11
- Sets
- R(e);N_PINR(E)::R1(E)
- B(i);N_PINR(E)::R1(E)
- S(c);::QAB1(H)
- S(f);N_PINR(E)::QAB1(H)
- S(f);N_PINR(E)::R1(E)
- S(f);::QAB1(H)
- S(f);XB(J)::QAB1(H)
- P(g);N_GUARD::QAR1(H)
- Tries
- Try
- S(I);
- Threat
- S(I),XP(g)
- Vars
- S(f);XB(J)::QAB1(H)
- S(f);XS(I)::QAB1(H)
- S(c);::QAB1(H)
- S(f);N_PINR(E)::QAB1(H)
- S(f);N_PINR(E)::R1(E)
- S(f);::QAB1(H)
- Refutation
- B(i);CHECK,XR(E)
- Try
- B(J);CHECK
- Vars
- S(f);XB(J)::QAB1(H)
- Refutation
- P(h);XB(J)
- Try
- R(K);CHECK
- Refutation
- S(f);XR(K)
- Try
- Q(H);CHECK
- Refutation
- K(d);P_SPINS(c),S_FLIGHT
- Try
- P(C);N_SPINR(E)
- Threat
- DUALS(2)
- Vars
- R(e);XP(C)::R1(E)
- S(f);XP(C)::QAB1(H)
- R(e);::R1(E)
- B(i);::R1(E)
- S(c);::QAB1(H)
- S(f);::R1(E)
- S(f);::QAB1(H)
- Refutation
- B(i);P_PINR(E),XP(C)
- Try
- Actual
- P(D);CHECK
- Vars
- S(c);XP(D)::QAB1(H)
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).