MESON Chess Problem Database
Problem Display
PID: 273029 (5N1K/bQ3B1p/nq3p2/r4k1b/2N2P2/6PP/7n/8 w - - 0 1)
Holm, I
Springaren, 1989
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sd6#
- 2.Be6#
- 1...Qf2
- 2.Sd6#
- 2.Be6#
- 1...Qe3
- 2.Sd6#
- 1...Qd4
- 2.Be6#
- 1...Qc5
- 2.Be6#
- 2.Qb1#
- 1...Qc7
- 2.Be6#
- 2.Qb1#
- 1...Qd8
- 2.Be6#
- 1...Qb1
- 2.Sd6#
- 2.Be6#
- 2.Qxb1#
- 1...Qb2
- 2.Sd6#
- 2.Be6#
- 1...Qb3
- 2.Sd6#
- 2.Be6#
- 1...Qb4
- 2.Be6#
- 1...Qb5
- 2.Sd6#
- 2.Be6#
- 1...Qd6
- 2.Sxd6#
- 1...Qe6
- 2.Bxe6#
- 1...Qxb7
- 2.Sd6#
- 1...Ra1
- 2.Qd5#
- 1...Ra2
- 2.Qd5#
- 1...Ra3
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Rc5
- 2.Se3#
- 1...Rd5
- 2.Qxd5#
- 1...Sc5
- 2.Se3#
- 2.Qd5#
- 1...Qg1
- Tries
- 1.Bxh5?
- threat
- 2.Qxh7#
- 1...Qxb7
- 2.Sd6#
- 1...Qc7
- 2.Qb1#
- 1...h6
- 2.Bg6#
- 2.Qh7#
- 1...Sc7!
- threat
- 1.Qc6?
- threat
- 2.Sd6#
- 2.Be6#
- 1...Bxf7
- 2.Sd6#
- 1...Rd5
- 2.Qxd5#
- 1...Qe3
- 2.Sd6#
- 1...Qd4
- 2.Be6#
- 2.Qe6#
- 1...Qc5
- 2.Be6#
- 2.Qe6#
- 1...Qc7
- 2.Be6#
- 2.Qe6#
- 1...Qd8
- 2.Be6#
- 2.Qe6#
- 1...Qb4
- 2.Be6#
- 2.Qe6#
- 1...Qb8
- 2.Be6#
- 2.Qe6#
- 1...Re5
- 2.Sd6#
- 1...Bb8
- 2.Be6#
- 1...Sc5
- 2.Se3#
- 2.Sd6#
- 2.Qd5#
- 1...Sc7
- 2.Sd6#
- 1...Qxc6!
- threat
- 1.Qc8+?
- 1...Qe6
- 2.Sd6#
- 2.Qxe6#
- 1...Ke4!
- 1...Qe6
- 1.Qxb6?
- threat
- 2.Sd6#
- 2.Qb1#
- 2.Qe6#
- 1...Bxf7
- 2.Sd6#
- 2.Qb1#
- 1...Bxb6
- 2.Sd6#
- 1...Ra1
- 2.Sd6#
- 2.Qe6#
- 1...Ra2
- 2.Sd6#
- 2.Qe6#
- 1...Ra3
- 2.Sd6#
- 2.Qe6#
- 1...Rb5
- 2.Sd6#
- 2.Qe6#
- 1...Rd5
- 2.Qe6#
- 1...Re5
- 2.Sd6#
- 1...Bd1
- 2.Sd6#
- 2.Qe6#
- 1...Be2
- 2.Sd6#
- 2.Qe6#
- 1...Bf3
- 2.Sd6#
- 2.Qe6#
- 1...Bb8
- 2.Qb1#
- 2.Qe6#
- 1...Sb4
- 2.Sd6#
- 2.Qe6#
- 1...Sc5
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 2.Qb1#
- 1...Ke4!
- threat
- 1.Qd7+?
- 1...Qe6
- 2.Sd6#
- 2.Qxe6#
- 1...Ke4!
- 1...Qe6
- 1.Bxh5?
- Keys
- 1.Bd5!
- threat
- 2.Be4#
- 1...Qxb7
- 2.Sd6#
- 1...Rxd5
- 2.Qxd5#
- 1...Qe3
- 2.Sd6#
- 1...Qd4
- 2.Sd6#
- 2.Be6#
- 2.Qc8#
- 2.Qd7#
- 1...Qb1
- 2.Sd6#
- 2.Be6#
- 2.Qc8#
- 2.Qxb1#
- 2.Qd7#
- 1...Qc6
- 2.Qb1#
- 1...Qe6
- 2.Bxe6#
- 1...Bf3
- 2.Qxh7#
- 1...Sc5
- 2.Se3#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::S(C)
- Q(f);N_GUARD::B(F)
- Q(f);N_GUARD,P_PINS(G)::B(F)
- Q(f);N_GUARD::S(C),XQ(f)
- Q(f);N_GUARD::B(F),XQ(f)
- Q(f);N_GUARD,XQ(E)::S(C)
- R(b);N_GUARD::QAR2(E)
- R(b);S_CUTQ(f)::S(C)
- R(b);N_GUARD::QAR2(E),XR(b)
- Tries
- Try
- B(F);XB(d)
- Threat
- QAB(E),XP(i)
- Vars
- Q(f);N_GUARD,XQ(E)::S(C)
- Q(f);OGATE::QAB(E)
- Refutation
- S(e);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(d);XB(F)::S(C)
- R(b);N_GUARD::QAR2(E),XR(b)
- Q(f);::S(C)
- R(b);::S(C)
- B(h);::B(F)
- S(e);::S(C)
- Refutation
- Q(f);XQ(E)
- Try
- Q(E);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Q(E);XQ(f)
- Threat
- DUALS(3)
- Vars
- B(h);XQ(E)::S(C)
- R(b);::QAB1(E)
- R(b);::S(C)
- S(e);::S(C)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(E);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- B(F);
- Threat
- B(F)
- Vars
- Q(f);N_GUARD,XQ(E)::S(C)
- R(b);OGATE,XB(F)::QAR2(E),XR(b)
- Q(f);N_GUARD::S(C)
- Q(f);OGATE::QAB(E)
- Q(f);N_GUARD::B(F),XQ(f)
- B(d);N_GUARD::QAB(E),XP(i)
- S(e);S_CUTQ(f)::S(C)
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).