MESON Chess Problem Database
Problem Display
PID: 125373 (1b2q3/2p2N2/1p3N2/3R4/B1k5/P3P2Q/1K2b3/n7 w - - 0 1)
van Dijk, Nils Gustav Gerard
Source?, 1985
#2
8 + 7
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxa4
- 2.Se5#
- 1...Qb5+
- 2.Bxb5#
- 1...Qc6
- 2.Se5#
- 1...Qd7
- 2.Se5#
- 1...Qxf7
- 2.Bb5#
- 1...Qxe3
- 2.Bb5#
- 1...Qe4
- 2.Bb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qe6
- 2.Bb5#
- 1...Qe7
- 2.Bb5#
- 1...Qc8
- 2.Se5#
- 2.Bb5#
- 1...Qd8
- 2.Se5#
- 2.Bb5#
- 1...Qf8
- 2.Se5#
- 2.Bb5#
- 1...Qg8
- 2.Se5#
- 2.Bb5#
- 1...Qh8
- 2.Se5#
- 2.Bb5#
- 1...Bf1
- 2.Qxf1#
- 1...Sc2
- 2.Bb3#
- 1...Sb3
- 2.Bxb3#
- 1...Qxa4
- Tries
- 1.Qf1?
- threat
- 2.Qxe2#
- 1...Qb5+
- 2.Bxb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxe3
- 2.Bb5#
- 1...Qe4
- 2.Bb5#
- 1...Bd3
- 2.Qxd3#
- 1...Bxf1!
- threat
- 1.Qg4+?
- 1...Qe4
- 2.Se5#
- 2.Bb5#
- 2.Qxe4#
- 1...Bxg4!
- 1...Qe4
- 1.Qf5?
- threat
- 2.Rd4#
- 1...Qb5+
- 2.Bxb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxe3
- 2.Bb5#
- 1...Qd7
- 2.Se5#
- 2.Qe4#
- 2.Qf4#
- 1...Qe4
- 2.Bb5#
- 2.Qxe4#
- 1...Qd8
- 2.Se5#
- 2.Bb5#
- 2.Qe4#
- 2.Qf4#
- 1...Sc2
- 2.Bb3#
- 2.Qxc2#
- 1...Sb3
- 2.Bxb3#
- 2.Qc2#
- 1...c5!
- threat
- 1.Qe6?
- threat
- 2.Se5#
- 1...Qb5+
- 2.Bxb5#
- 1...Qxf7
- 2.Bb5#
- 2.Qe4#
- 2.Qc6#
- 1...Qxe6
- 2.Bb5#
- 1...c5
- 2.Rd4#
- 1...c6!
- threat
- 1.Qd7?
- threat
- 2.Bb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxd7
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...c6!
- threat
- 1.Qh4+?
- 1...Qe4
- 2.Se5#
- 2.Bb5#
- 2.Qxe4#
- 1...Bg4!
- 1...Qe4
- 1.Qh5?
- threat
- 2.Rd4#
- 2.Qxe2#
- 1...Qb5+
- 2.Bxb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxe3
- 2.Bb5#
- 1...Bd1
- 2.Rd4#
- 1...Qd7
- 2.Se5#
- 2.Qxe2#
- 1...Qe4
- 2.Bb5#
- 1...Qd8
- 2.Se5#
- 2.Bb5#
- 2.Qxe2#
- 1...Bf1
- 2.Rd4#
- 1...Bd3
- 2.Rd4#
- 1...Bf3
- 2.Rd4#
- 1...Bg4
- 2.Rd4#
- 1...Sc2
- 2.Bb3#
- 2.Qxe2#
- 1...Sb3
- 2.Bxb3#
- 2.Qxe2#
- 1...c5
- 2.Qxe2#
- 1...Bxh5!
- threat
- 1.e4?
- threat
- 2.Qc3#
- 1...Qb5+
- 2.Bxb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Bd3
- 2.Qxd3#
- 1...Bf3!
- threat
- 1.Qf1?
- Keys
- 1.Qc8!
- threat
- 2.Sd6#
- 1...Qb5+
- 2.Bxb5#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxf7
- 2.Bb5#
- 1...Qxc8
- 2.Se5#
- 2.Bb5#
- 1...Qc6
- 2.Se5#
- 1...Qd7
- 2.Se5#
- 1...Qe6
- 2.Bb5#
- 1...Qe7
- 2.Bb5#
- 1...Qd8
- 2.Se5#
- 2.Bb5#
- 1...Qf8
- 2.Se5#
- 2.Bb5#
- 1...c5
- 2.Rd4#
- 1...c6
- 2.Bb5#
- threat
- 1.Qc8!
This anticipates 177792(1985)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(g);N_GUARD,XB(E)::S(H)
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD,XS(H)::B(E)
- Q(g);N_GUARD,XP(C)::B(E)
- Q(g);N_GUARD::B(E)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- B(b);OGATEB::QAB(D),XB(b)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Tries
- Try
- Q(D);P_PINB(b)
- Threat
- QAB(D),XB(b)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD,XP(C)::B(E)
- Q(g);N_GUARD::B(E)
- B(b);OGATE::QAB1(D),XB(b)
- Refutation
- B(b);N_SPINB(b),XQ(D)
- Try
- Q(D);CHECK
- Refutation
- B(b);XQ(D)
- Try
- Q(D);
- Threat
- R1(F)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD,XP(C)::B(E)
- Refutation
- P(e);
- Try
- Q(D);
- Threat
- S(H)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);N_GUARD,XQ(D)::B(E)
- P(e);SBLOCK::QAB(D)+R(F),DCHECK
- Refutation
- P(e);
- Try
- Q(D);
- Threat
- B(E)
- Vars
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD,XQ(D)::S(H)
- P(d);::B(E),XP(d)
- Refutation
- P(e);
- Try
- Q(D);CHECK
- Refutation
- B(b);P_SPINB(b)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD,XP(C)::B(E)
- B(b);::R1(F)
- Q(g);N_GUARD::B(E)
- P(e);::QAB(D),XB(b)
- Refutation
- B(b);XQ(D)
- Try
- P(C);
- Threat
- QAR1(D)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- B(b);N_GUARD::QAB1(D),XB(b)
- Refutation
- B(b);
- Try
- Actual
- Q(D);P_PINP(e)
- Threat
- S(H)
- Vars
- Q(g);CHECK,N_GUARD::B(E),XQ(g)
- Q(g);CHECK,N_GUARD::S(H),XQ(g)
- Q(g);N_GUARD,XS(H)::B(E)
- Q(g);N_GUARD,N_SPINP(e)::S(H)
- Q(g);N_GUARD::S(H)
- Q(g);N_GUARD::B(E)
- P(e);::R1(F)
- P(e);S_CUTQ(g)::B(E)
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).