MESON Chess Problem Database
Problem Display
PID: 72810 (8/1n1rBp2/1KN4R/pn1kp2p/1p2N3/1Pp2P2/4P3/6Q1 w - - 0 1)
Ruben, CL
Tijdschrift vd KNSB, 1936
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxe7
- 2.Sxe7#
- 1...Sa3
- 2.Qd1#
- 1...S5d6
- 2.Qd1#
- 1...Sa7
- 2.Qd1#
- 1...Sc7
- 2.Qd1#
- 1...Sc5
- 2.Qxc5#
- 1...S7d6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...a4
- 2.Sxb4#
- 1...f5
- 2.Qg8#
- 1...f6
- 2.Qg8#
- 1...Rxe7
- Tries
- 1.Sd2?
- threat
- 2.e4#
- 1...f6
- 2.Qg8#
- 1...Sc5
- 2.Qxc5#
- 1...S7d6
- 2.Qc5#
- 1...e4
- 2.fxe4#
- 1...f5
- 2.Qg8#
- 1...S5d6!
- threat
- 1.Sxc3+?
- 1...bxc3
- 2.e4#
- 1...Sxc3!
- 1...bxc3
- 1.Sc5?
- threat
- 2.e4#
- 1...Sxc5
- 2.Qxc5#
- 1...S5d6
- 2.Qd1#
- 1...e4
- 2.fxe4#
- 1...f5
- 2.Qg8#
- 1...S7d6!
- threat
- 1.Sg5?
- threat
- 2.e4#
- 1...S7d6
- 2.Qc5#
- 1...S5d6
- 2.Qd1#
- 1...Sc5
- 2.Qxc5#
- 1...e4
- 2.fxe4#
- 1...f5!
- threat
- 1.Rxh5?
- threat
- 2.Rxe5#
- 1...Ke6
- 2.Rxe5#
- 1...f5
- 2.Qg8#
- 1...f6
- 2.Qg8#
- 1...Rxe7!
- threat
- 1.Qg3?
- threat
- 2.Qxe5#
- 1...f6
- 2.Qg8#
- 1...Rxe7!
- threat
- 1.Qg5?
- threat
- 2.Qxe5#
- 1...f6
- 2.Qg8#
- 1...f5
- 2.Qg8#
- 1...Rxe7!
- threat
- 1.Qg7?
- threat
- 2.Qxe5#
- 2.Qxf7#
- 1...f6
- 2.Qf7#
- 2.Qg8#
- 1...Rd6
- 2.Qxe5#
- 1...Sd4
- 2.Qxe5#
- 1...S5d6
- 2.Qxe5#
- 1...Sc7
- 2.Qxe5#
- 1...Sc5
- 2.Qxe5#
- 1...S7d6
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...f5
- 2.Qxe5#
- 2.Qf7#
- 2.Qg8#
- 1...Rxe7!
- threat
- 1.Sd2?
- Keys
- 1.Sd6!
- threat
- 2.e4#
- 1...S5xd6
- 2.Qd1#
- 1...S7xd6
- 2.Qc5#
- 1...f6
- 2.Qg8#
- 1...Sc5
- 2.Qxc5#
- 1...e4
- 2.fxe4#
- 1...f5
- 2.Qg8#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(i);XB(I)::S(G),XR(i)
- S(d);N_GUARD::QAR(A)
- S(h);N_GUARD::QAR1(A),XS(h)
- S(h);N_GUARD::QAR1(A)
- P(c);N_GUARD::S(G),XP(b)
- P(j);OGATEB::QAB(A)
- Tries
- Try
- S(E);
- Threat
- P(B)
- Vars
- P(j);OGATEB::QAB(A)
- S(h);N_GUARD::QAR1(A),XS(h)
- S(h);N_GUARD::QAR1(A)
- P(f);OGATE::P(D),XP(f)
- Refutation
- S(d);
- Try
- S(E);CHECK,XP(a)
- Vars
- P(b);XS(E)::P(B)
- Refutation
- S(d);XS(E)
- Try
- S(E);
- Threat
- P(B)
- Vars
- S(h);OGATE,XS(E)::QAR1(A),XS(h)
- S(d);N_GUARD::QAR(A)
- P(f);OGATE::P(D),XP(f)
- P(j);OGATEB::QAB(A)
- Refutation
- S(h);
- Try
- S(E);
- Threat
- P(B)
- Vars
- S(h);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR(A)
- S(h);N_GUARD::QAR1(A),XS(h)
- P(f);OGATE::P(D),XP(f)
- Refutation
- P(j);
- Try
- R(H);P_PINP(f),XP(g)
- Threat
- R1(H),XP(f)
- Vars
- K(e);N_SPINP(f),S_FLIGHT::R1(H),XP(f)
- P(j);N_SPINP(f),OGATEB::QAB(A)
- P(j);OGATEB::QAB(A)
- Refutation
- R(i);XB(I)
- Try
- Q(A);
- Threat
- QAR1(A),XP(f)
- Vars
- P(j);OGATEB::QAB(A)
- Refutation
- R(i);XB(I)
- Try
- Q(A);P_PINP(f)
- Threat
- QAR1(A),XP(f)
- Vars
- P(j);OGATEB::QAB(A)
- P(j);N_SPINP(f),OGATEB::QAB(A)
- Refutation
- R(i);XB(I)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(i);P_PINS(G)::QAR1(A),XP(f)
- S(d);::QAR1(A),XP(f)
- S(h);::QAR1(A),XP(f)
- Refutation
- R(i);XB(I)
- Try
- Actual
- S(E);
- Threat
- P(B)
- Vars
- S(d);N_GUARD,XS(E)::QAR(A)
- S(h);N_GUARD,XS(E)::QAR1(A)
- P(j);OGATEB::QAB(A)
- S(h);N_GUARD::QAR1(A),XS(h)
- P(f);OGATE::P(D),XP(f)
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).