MESON Chess Problem Database
Problem Display
PID: 11682 (5B2/K2n4/8/Nk2r2p/3Qp1r1/1N5B/R4bP1/8 w - - 0 1)
van Dijk, Nils Gustav Gerard
21st Place, 01. WCCT, 1972-1975
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Bxd7#
- 1...Rg3
- 2.Bxd7#
- 1...Rf4
- 2.Bxd7#
- 1...Rh4
- 2.Bxd7#
- 1...Rgg5
- 2.Bxd7#
- 1...Rg8
- 2.Bxd7#
- 1...Rc5
- 2.Qa4#
- 1...Be1
- 2.Qa4#
- 2.Qc4#
- 2.Qxd7#
- 1...Bg3
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 2.Qxd7#
- 1...Bxd4+
- 2.Sxd4#
- 1...Bh4
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 2.Qxd7#
- 1...Sc5
- 2.Qc4#
- 1...Sb6
- 2.Qb4#
- 1...e3
- 2.Qxd7#
- 1...Rxg2
- Tries
- 1.Kb7?
- threat
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 2.Qxd7#
- 1...Bxd4
- 2.Sxd4#
- 1...Sxf8
- 2.Qa4#
- 2.Qc4#
- 1...Rg6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Rg7
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Rc5
- 2.Qa4#
- 1...Rd5
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Re6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Re7
- 2.Qa4#
- 2.Qc4#
- 1...Be1
- 2.Qa4#
- 2.Qc4#
- 2.Qxd7#
- 1...Sb6
- 2.Qb4#
- 1...Sf6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Sb8
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...e3
- 2.Qxd7#
- 1...Sc5+!
- threat
- 1.Bxg4?
- threat
- 2.Be2#
- 2.Bxd7#
- 1...Bxd4+
- 2.Sxd4#
- 1...Sxf8
- 2.Be2#
- 1...Rc5
- 2.Qa4#
- 1...Rd5
- 2.Be2#
- 1...Rf5
- 2.Be2#
- 1...Re6
- 2.Be2#
- 1...Re7
- 2.Be2#
- 1...Sc5
- 2.Qc4#
- 1...Sb6
- 2.Qb4#
- 1...Sf6
- 2.Be2#
- 1...Sb8
- 2.Be2#
- 1...hxg4!
- threat
- 1.Bc5?
- threat
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 2.Qxd7#
- 1...Rxc5
- 2.Qa4#
- 1...Sxc5
- 2.Qc4#
- 1...Rg6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Rg7
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Rd5
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Re6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Re7
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Be1
- 2.Qa4#
- 2.Qc4#
- 2.Qxd7#
- 1...Sb6
- 2.Qb4#
- 1...Sf6
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Sb8
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...Sf8
- 2.Qa4#
- 2.Qb4#
- 2.Qc4#
- 1...e3
- 2.Qxd7#
- 1...Bxd4!
- threat
- 1.Rxf2?
- threat
- 2.Qb4#
- 2.Qc4#
- 2.Qxd7#
- 1...Sxf8
- 2.Qc4#
- 1...Rg6
- 2.Qb4#
- 2.Qc4#
- 1...Rg7
- 2.Qb4#
- 2.Qc4#
- 1...Rd5
- 2.Qb4#
- 2.Qc4#
- 1...Re6
- 2.Qb4#
- 2.Qc4#
- 1...Re7
- 2.Qc4#
- 1...Sc5
- 2.Qc4#
- 1...Sb6
- 2.Qb4#
- 1...Sf6
- 2.Qb4#
- 2.Qc4#
- 1...Sb8
- 2.Qb4#
- 2.Qc4#
- 1...e3
- 2.Qxd7#
- 1...Rc5!
- threat
- 1.Ra4?
- threat
- 2.Rb4#
- 1...Be1
- 2.Qc4#
- 2.Qxd7#
- 1...Bxd4+!
- threat
- 1.Kb7?
- Keys
- 1.g3!
- threat
- 2.Bf1#
- 1...Bxd4+
- 2.Sxd4#
- 1...Rxg3
- 2.Bxd7#
- 1...Rc5
- 2.Qa4#
- 1...Sc5
- 2.Qc4#
- 1...Sb6
- 2.Qb4#
- 1...e3
- 2.Qxd7#
- threat
- 1.g3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(c);OGATE,XP(B)::B(D),XS(g)
- R(c);OGATE::B(D),XS(g)
- R(e);N_PINQ(E)::QAB1(E)
- B(a);CHECK,XQ(E)::S(C),XB(a)
- S(g);N_PINQ(E)::QAB1(E)
- S(g);N_PINQ(E)::QAR1(E)
- P(b);N_PINQ(E)::QAB(E),XS(g)
- Tries
- Try
- K(G);N_SPINQ(E),P-FLIGHT
- Threat
- DUALS(4)
- Vars
- B(a);XQ(E)::S(C),XB(a)
- R(e);::QAB1(E)
- S(g);::QAR1(E)
- P(b);::QAB(E),XS(g)
- Refutation
- S(g);CHECK
- Try
- B(D);XR(c)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XQ(E)::S(C),XB(a)
- S(g);XB(H)::B(D)
- R(e);N_PINQ(E)::QAB1(E)
- R(e);::B(D)
- S(g);N_PINQ(E)::QAB1(E)
- S(g);N_PINQ(E)::QAR1(E)
- S(g);::B(D)
- Refutation
- P(f);XB(D)
- Try
- B(H);N_SPINQ(E)
- Threat
- DUALS(4)
- Vars
- R(e);XB(H)::QAB1(E)
- S(g);XB(H)::QAB1(E)
- S(g);::QAR1(E)
- P(b);::QAB(E),XS(g)
- Refutation
- B(a);P_PINB(H),XQ(E)
- Try
- R(A);N_SPINQ(E),XB(a)
- Threat
- DUALS(3)
- Vars
- S(g);XB(H)::QAB1(E)
- R(e);::QAB1(E)
- S(g);::QAB1(E)
- S(g);::QAR1(E)
- P(b);::QAB(E),XS(g)
- Refutation
- R(e);
- Try
- R(A);
- Threat
- R1(A)
- Refutation
- B(a);CHECK,XQ(E)
- Try
- Actual
- P(B);
- Threat
- B(D)
- Vars
- B(a);CHECK,XQ(E)::S(C),XB(a)
- R(c);OGATE,XP(B)::B(D),XS(g)
- R(e);N_PINQ(E)::QAB1(E)
- S(g);N_PINQ(E)::QAB1(E)
- S(g);N_PINQ(E)::QAR1(E)
- P(b);N_PINQ(E)::QAB(E),XS(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).