MESON Chess Problem Database
Problem Display
PID: 7915 (8/1q2p3/4p2Q/4B2b/2B2KP1/5PPN/2pk4/2N2R2 w - - 0 1)
Hannelius, Jan Ingvar
The Problemist, 1994
#2
10 + 6
| 422 | Suomen Tehtavaniekat | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Qxf3+
- 2.Kxf3#
- 1...Qe4+
- 2.Kxe4#
- 1...Qd5
- 2.Sb3#
- 1...Qa6
- 2.Ke4#
- 2.Sb3#
- 1...Qc6
- 2.Sb3#
- 1...Qa8
- 2.Sb3#
- 1...Qc8
- 2.Ke4#
- 2.Sb3#
- 1...Qb1
- 2.Ke4#
- 1...Qb2
- 2.Ke4#
- 1...Qb3
- 2.Sxb3#
- 1...Qb4
- 2.Ke4#
- 1...Qb5
- 2.Ke4#
- 1...Qa7
- 2.Sb3#
- 1...Qc7
- 2.Ke4#
- 2.Sb3#
- 1...Qd7
- 2.Ke4#
- 2.Sb3#
- 1...Qb8
- 2.Ke4#
- 1...Bxg4
- 2.Kxg4#
- 1...Qxf3+
- Tries
- 1.Sg1?
- 1...Qxf3+
- 2.Kxf3#
- 2.Sxf3#
- 1...Qe4+
- 2.Kxe4#
- 1...Bxg4
- 2.Kxg4#
- 2.Qh2#
- 1...Qd5
- 2.Sb3#
- 1...Qa6
- 2.Ke4#
- 2.Sb3#
- 1...Qc6
- 2.Sb3#
- 1...Qa8
- 2.Sb3#
- 1...Qc8
- 2.Ke4#
- 2.Sb3#
- 1...Qb1
- 2.Ke4#
- 1...Qb2
- 2.Ke4#
- 1...Qb3
- 2.Sxb3#
- 1...Qb4
- 2.Ke4#
- 1...Qb5
- 2.Ke4#
- 1...Qa7
- 2.Sb3#
- 1...Qc7
- 2.Ke4#
- 2.Sb3#
- 1...Qd7
- 2.Ke4#
- 2.Sb3#
- 1...Qb8
- 2.Ke4#
- 1...Bg6
- 2.Qh2#
- 1...Bf7
- 2.Qh2#
- 1...Be8
- 2.Qh2#
- 1...Qb6!
- 1...Qxf3+
- 1.Bb5?
- threat
- 2.Sb3#
- 1...Qxf3+
- 2.Kxf3#
- 1...Qe4+
- 2.Kxe4#
- 1...Qxb5
- 2.Ke4#
- 1...Qd5!
- threat
- 1.gxh5?
- threat
- 2.Kg4#
- 1...Qxf3+
- 2.Kxf3#
- 1...Qe4+
- 2.Kxe4#
- 1...Qb3
- 2.Sxb3#
- 1...Qa7
- 2.Sb3#
- 1...Qb6!
- threat
- 1.Sg1?
- Keys
- 1.Sg5!
- 1...Qxf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Sxe4#
- 1...Bxg4
- 2.Qh2#
- 1...Qd5
- 2.Sb3#
- 1...Qa6
- 2.Sb3#
- 2.Se4#
- 1...Qc6
- 2.Sb3#
- 1...Qa8
- 2.Sb3#
- 1...Qc8
- 2.Sb3#
- 2.Se4#
- 1...Qb1
- 2.Se4#
- 1...Qb2
- 2.Se4#
- 1...Qb3
- 2.Sxb3#
- 2.Se4#
- 1...Qb4
- 2.Se4#
- 1...Qb5
- 2.Se4#
- 1...Qb6
- 2.Se4#
- 1...Qa7
- 2.Sb3#
- 2.Se4#
- 1...Qc7
- 2.Sb3#
- 2.Se4#
- 1...Qd7
- 2.Sb3#
- 2.Se4#
- 1...Qb8
- 2.Se4#
- 1...Bg6
- 2.Qh2#
- 1...Bf7
- 2.Qh2#
- 1...Be8
- 2.Qh2#
- 1...Qxf3+
- 1.Sg5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(e);CHECK,XP(C)::QAB(J)+K(G),XQ(e)
- Q(e);CHECK::QAB(J)+K(G),XQ(e)
- Q(e);N_GUARD::S(A)
- Q(e);::QAB(J)+K(G)
- Q(e);N_GUARD::S(A),XQ(e)
- Q(e);P_PINB(F)::QAB(J)+K(G)
- Q(e);P_PINB(I)::QAB(J)+K(G)
- B(c);XP(H)::QAB(J)+K(G),XB(c)
- Tries
- Try
- S(E);
- Vars
- Q(e);CHECK::QAB(J)+K(G),XQ(e)
- Q(e);N_GUARD::S(A)
- Q(e);::QAB(J)+K(G)
- Q(e);N_GUARD::S(A),XQ(e)
- Q(e);P_PINB(F)::QAB(J)+K(G)
- Q(e);P_PINB(I)::QAB(J)+K(G)
- B(c);OGATE::QAR(J)
- Refutation
- Q(e);
- Try
- B(F);
- Threat
- S(A)
- Vars
- Q(e);CHECK,XP(C)::QAB(J)+K(G),XQ(e)
- Q(e);CHECK::QAB(J)+K(G),XQ(e)
- Q(e);XB(F)::QAB(J)+K(G)
- Refutation
- Q(e);
- Try
- P(H);XB(c)
- Threat
- QAB(J)+K(G)
- Vars
- Q(e);CHECK,XP(C)::QAB(J)+K(G),XQ(e)
- Q(e);CHECK::QAB(J)+K(G),XQ(e)
- Q(e);N_GUARD::S(A),XQ(e)
- Q(e);N_GUARD::S(A)
- Refutation
- Q(e);
- Try
- Actual
- S(E);
- Vars
- Q(e);CHECK,XP(C)::S(E),XQ(e)
- Q(e);CHECK,N_GUARD::S(E),XQ(e)
- B(c);OGATE,XP(H)::QAR(J)
- Q(e);N_GUARD::S(A)
- Q(e);N_GUARD::S(E)
- Q(e);N_GUARD,P_PINB(F)::S(E)
- Q(e);N_GUARD,P_PINB(I)::S(E)
- B(c);OGATE::QAR(J)
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).