MESON Chess Problem Database
Problem Display
PID: 141757 (2K2n1Q/7p/1R1b2rq/2pk1BN1/1p3B2/nP2p3/4N3/7b w - - 0 1)
den Toom, Bas
Probleemblad, 1977
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.Bxe4#
- 1...Bxf4
- 2.Sxf4#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Se6
- 2.Rxd6#
- 1...c4
- 2.Qd4#
- 1...Be4
- Tries
- 1.Be6+?
- 1...Sxe6
- 2.Rxd6#
- 1...Rxe6!
- 1...Sxe6
- 1.Qg8+?
- 1...Re6
- 2.Rxd6#
- 1...Se6
- 2.Rxd6#
- 1...Rxg8!
- 1...Re6
- 1.Be6+?
- Keys
- 1.Qa1!
- threat
- 2.Qd1#
- 1...Bxf4
- 2.Sxf4#
- 1...c4
- 2.Qd4#
- 1...Qg7
- 2.Qxh1#
- 1...Be4
- 2.Bxe4#
- 1...Be5
- 2.Qxe5#
- 1...Sb1
- 2.Qa8#
- 1...Sc2
- 2.Qa8#
- 1...Sc4
- 2.Qa8#
- 1...Sb5
- 2.Qa8#
- 1...Se6
- 2.Rxd6#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::B(D),XB(a)
- B(g);XB(C)::S(A),XB(g)
- B(g);N_GUARD::QAR1(H),XB(g)
- B(g);N_GUARD::QAR1(H)
- S(k);S_CUTR(h)::R1(F),XB(g)
- P(e);N_GUARD::QAR1(H)
- Tries
- Try
- B(D);CHECK
- Vars
- S(k);XB(D)::R1(F),XB(g)
- Refutation
- R(h);XB(D)
- Try
- Q(H);CHECK
- Vars
- R(h);P_SPINR(h)::R1(F),XB(g)
- S(k);P_SPINS(k)::R1(F),XB(g)
- Refutation
- R(h);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- B(g);XB(C)::S(A),XB(g)
- P(e);N_GUARD::QAR1(H)
- Q(i);N_GUARD::QAB(H),XB(a)
- B(a);N_GUARD::B(D),XB(a)
- B(g);N_GUARD::QAR1(H),XB(g)
- S(b);OGATE::QAB(H)
- S(k);S_CUTR(h)::R1(F),XB(g)
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).