MESON Chess Problem Database
Problem Display
PID: 18760 (3K4/3N1p2/2QBkp1b/6qR/4NP2/3P4/8/8 w - - 0 1)
Smedley, Don A
1st HM., Chess, 1958
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Sec5#
- 2.Sdc5#
- 2.Bxf4#
- 2.Be5#
- 2.Qd5#
- 2.Qc4#
- 1...Qh4
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 2.f5#
- 1...Qg1
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 2.f5#
- 1...Qg2
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 2.f5#
- 1...Qg3
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 2.f5#
- 1...Qg4
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 1...Qa5+
- 2.Bc7#
- 1...Qc5
- 2.Sexc5#
- 2.Sdxc5#
- 2.Bxc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Bxe5#
- 1...Qf5
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 1...Qg6
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 1...Qg7
- 2.Sec5#
- 2.Sdc5#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qd5#
- 2.Qc4#
- 2.f5#
- 1...Qg8+
- 2.Bf8#
- 1...f5+
- 2.Be7#
- 1...Qxf4
- Tries
- 1.Sg3?
- threat
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 1...Qa5+
- 2.Bc7#
- 1...Qg8+
- 2.Bf8#
- 1...f5+
- 2.Be7#
- 1...Qxf4
- 2.Sc5#
- 2.Bxf4#
- 2.Be5#
- 2.Qd5#
- 1...Qc5
- 2.Sxc5#
- 2.Bxc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Bxe5#
- 1...Bf8
- 2.Sxf8#
- 2.Be7#
- 2.Bxf8#
- 1...Qb5!
- threat
- 1.Sec5+?
- 1...Qxc5
- 2.Sxc5#
- 2.Bxc5#
- 1...Kf5!
- 1...Qxc5
- 1.Sdc5+?
- 1...Qxc5
- 2.Sxc5#
- 2.Bxc5#
- 2.Qd7#
- 2.Qe8#
- 1...Kf5!
- 1...Qxc5
- 1.Sf8+?
- 1...Kf5
- 2.Qd7#
- 2.Qc8#
- 1...Bxf8!
- 1...Kf5
- 1.Qc4+?
- 1...Qd5
- 2.Sdc5#
- 2.Qxd5#
- 2.f5#
- 1...Kf5!
- 1...Qd5
- 1.f5+?
- 1...Qxf5
- 2.Bh2#
- 2.Ba3#
- 2.Bg3#
- 2.Bb4#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 1...Kxf5!
- 1...Qxf5
- 1.Sg3?
- Keys
- 1.Qc8!
- threat
- 2.Sb6#
- 2.Sdxf6#
- 1...Qa5+
- 2.Sb6#
- 1...Qg8+
- 2.Sf8#
- 1...f5+
- 2.Sdf6#
- 1...Kd5
- 2.Qc4#
- 1...Kf5
- 2.Sf8#
- 1...Qb5
- 2.Sdc5#
- 2.Sf8#
- 1...Qc5
- 2.Sdxc5#
- 2.Sf8#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(a);CHECK::QAR(E)+B(F)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);::QAR(E)+B(F),XQ(a)
- P(c);CHECK,SBLOCK::QAR(E)+B(F)
- Tries
- Try
- S(B);
- Threat
- DUALS(8)
- Vars
- Q(a);CHECK::QAR(E)+B(F)
- P(c);CHECK::QAR(E)+B(F)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);::QAR(E)+B(F),XQ(a)
- Refutation
- Q(a);
- Try
- S(B);CHECK
- Refutation
- K(b);P_SPINQ(a),S_FLIGHT
- Try
- S(G);CHECK
- Refutation
- K(b);P_SPINQ(a),S_FLIGHT
- Try
- S(G);CHECK
- Refutation
- B(d);XS(G)
- Try
- Q(E);CHECK
- Refutation
- K(b);P_SPINQ(a),S_FLIGHT
- Try
- P(C);CHECK
- Refutation
- K(b);P_SPINQ(a),S_FLIGHT,XP(C)
- Try
- Actual
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAB(E)+S(G)
- Q(a);CHECK::QAB(E)+S(G),DCHECK
- P(c);CHECK,SBLOCK::QAB(E)+S(G)
- K(b);P_SPINQ(a),S_FLIGHT::QAB1(E)
- K(b);P_SPINQ(a),S_FLIGHT::QAB(E)+S(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).