MESON Chess Problem Database
Problem Display
PID: 181267 (3B4/KN6/2kNP3/pp1b3R/8/2rB3Q/1r1p4/q2n4 w - - 0 1)
Verhoef, J
van der Kraan, Petrus Adrianus
Tijdschrift vd KNSB, 1935
#2
8 + 9
| 136 | Problem Observer | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Bxb5#
- 1...Rbc2
- 2.Bxb5#
- 1...Bh1
- 2.Qxh1#
- 1...Bg2
- 2.Qxg2#
- 1...Bb3
- 2.Bxb5#
- 1...Bf3
- 2.Qxf3#
- 1...Bc4
- 2.Rc5#
- 1...Be4
- 2.Bxe4#
- 1...b4
- 2.Bb5#
- 1...Ra2
- Tries
- 1.Sf5?
- threat
- 2.Sd4#
- 2.Se7#
- 1...Rxd3
- 2.Se7#
- 1...Qa3
- 2.Sd4#
- 1...Qa4
- 2.Se7#
- 1...Rb4
- 2.Se7#
- 1...Rc4
- 2.Se7#
- 1...Bxe6!
- threat
- 1.Sc8?
- threat
- 2.Se7#
- 1...Bxe6
- 2.Qxe6#
- 1...Qa3!
- threat
- 1.e7?
- threat
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rxd3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Qa2
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Qb1
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Qc1
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Qa3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Qa4
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rb1
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Ra2
- 2.Bxb5#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rbc2
- 2.Bxb5#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rbb3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rb4
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rc1
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rcc2
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Ra3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rcb3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rc4
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Rc5
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bh1
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Ba2
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bg2
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bb3
- 2.Bxb5#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bf3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bc4
- 2.Rc5#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Be4
- 2.Bxe4#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Bf7
- 2.Qc8#
- 1...Bg8
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Sf2
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Se3
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...a4
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...b4
- 2.Bb5#
- 2.Qc8#
- 2.e8Q#
- 2.e8B#
- 1...Be6!
- threat
- 1.Sf5?
- Keys
- 1.Sf7!
- threat
- 2.Se5#
- 1...Bxe6
- 2.Qxe6#
- 1...Bh1
- 2.Qxh1#
- 1...Ba2
- 2.Sxa5#
- 1...Bg2
- 2.Qxg2#
- 1...Bb3
- 2.Bxb5#
- 1...Bf3
- 2.Qxf3#
- 1...Bc4
- 2.Rc5#
- 1...Be4
- 2.Bxe4#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::B(A),XP(g)
- B(h);OGATEB::QAB(B),XB(h)
- B(h);S_CUTR(c)::B(A),XP(g)
- B(h);OGATE::R1(C)
- B(h);OGATEB::B(A),XB(h)
- P(g);S_CUTR(c)::B(A)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(e);XB(A)::S(D)
- Q(a);::S(D)
- R(c);::S(D)
- R(e);::S(D)
- Refutation
- B(h);XP(E)
- Try
- S(D);
- Threat
- S(D)
- Vars
- B(h);OGATE,XP(E)::QAR2(B),XB(h)
- Refutation
- Q(a);
- Try
- P(E);
- Threat
- DUALS(3)
- Vars
- B(h);::QAR2(B)
- Refutation
- B(h);
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- B(h);OGATE,XP(E)::QAR2(B),XB(h)
- B(h);OGATEB::QAB(B),XB(h)
- B(h);S_CUTQ(a)::S(G),XP(f)
- B(h);S_CUTR(c)::B(A),XP(g)
- B(h);OGATE::R1(C)
- B(h);OGATEB::B(A),XB(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).