MESON Chess Problem Database
Problem Display
PID: 43237 (5rbB/3q4/8/N3N3/1P1k4/7p/Bn1P3K/1r3R1Q w - - 0 1)
Kempe, Alfred
The Chess Player, 1853
#2
9 + 7
| 14689 | A Memorial to D. J. Densmore | 1920 |
| 56 | The Problemist | 1938 |
| 145 | StrateGems | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Sac6#
- 1...Qf5
- 2.Sac6#
- 1...Qc6
- 2.Saxc6#
- 1...Qa7
- 2.Sac6#
- 1...Qe7
- 2.Sac6#
- 1...Qf7
- 2.Sac6#
- 1...Qg7
- 2.Sac6#
- 1...Qh7
- 2.Sac6#
- 1...Qd8
- 2.Sac6#
- 1...Rf4
- 2.Rxf4#
- 1...Rf7
- 2.Sb3#
- 1...Ra8
- 2.Rf4#
- 1...Rb8
- 2.Rf4#
- 1...Rc8
- 2.Rf4#
- 1...Rd8
- 2.Rf4#
- 1...Re8
- 2.Rf4#
- 1...Bb3
- 2.Sxb3#
- 1...Bf7
- 2.Rf4#
- 1...Bh7
- 2.Sb3#
- 1...Sd3
- 2.Sec6#
- 1...Qg4
- Tries
- 1.Qf3?
- threat
- 2.Sec6#
- 2.Sf7#
- 2.Qe3#
- 1...Bxa2
- 2.Sec6#
- 1...Qg7
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Rf6
- 2.Qe3#
- 1...Qg4
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Qb5
- 2.Sec6#
- 2.Qe3#
- 1...Qf5
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Qc6
- 2.Saxc6#
- 2.Sexc6#
- 2.Qe3#
- 1...Qe6
- 2.Sec6#
- 2.Qe3#
- 1...Qe8
- 2.Sec6#
- 2.Qe3#
- 1...Qd5
- 2.Sec6#
- 2.Qe3#
- 1...Qd6
- 2.Qe3#
- 1...Qc7
- 2.Qe3#
- 1...Qe7
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Qf7
- 2.Sac6#
- 2.Sec6#
- 2.Sxf7#
- 2.Qe3#
- 1...Qh7
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Qd8
- 2.Sac6#
- 2.Sec6#
- 2.Qe3#
- 1...Re1
- 2.Sec6#
- 1...Rf4
- 2.Sec6#
- 2.Qe3#
- 2.Qxf4#
- 1...Rf5
- 2.Sec6#
- 2.Qe3#
- 1...Rf7
- 2.Sb3#
- 2.Sec6#
- 2.Sxf7#
- 2.Qe3#
- 1...Re8
- 2.Sec6#
- 2.Qe3#
- 2.Qf4#
- 1...Bb3
- 2.Sxb3#
- 2.Sec6#
- 1...Bc4
- 2.Sec6#
- 1...Bd5
- 2.Sec6#
- 2.Qe3#
- 1...Be6
- 2.Sec6#
- 2.Qe3#
- 1...Bf7
- 2.Sec6#
- 2.Qe3#
- 2.Qf4#
- 1...Bh7
- 2.Sb3#
- 2.Sec6#
- 2.Qe3#
- 1...Sd1
- 2.Sec6#
- 2.Sf7#
- 2.Qd3#
- 1...Sd3
- 2.Sec6#
- 2.Qxd3#
- 2.Qe3#
- 1...Sc4
- 2.Sec6#
- 2.Qd3#
- 1...Rxf3!
- threat
- 1.Qg1+?
- 1...Ke4
- 2.Qe3#
- 1...Rf2+!
- 1...Ke4
- 1.Qf3?
- Keys
- 1.Bf7!
- threat
- 2.Sb3#
- 2.Rf4#
- 1...Qxf7
- 2.Sac6#
- 1...Rxf1
- 2.Sb3#
- 1...Rxf7
- 2.Sb3#
- 1...Bxf7
- 2.Rf4#
- 1...Qa4
- 2.Rf4#
- 2.Qd5#
- 1...Qg4
- 2.Sb3#
- 2.Sac6#
- 2.Qd5#
- 1...Qf5
- 2.Sb3#
- 2.Sac6#
- 2.Qd5#
- 1...Qc6
- 2.Sb3#
- 2.Saxc6#
- 1...Qe6
- 2.Rf4#
- 1...Qd5
- 2.Qxd5#
- 1...Qb7
- 2.Sb3#
- 1...Re1
- 2.Sb3#
- 1...Bh7
- 2.Sb3#
- 1...Sd1
- 2.Rf4#
- 1...Sd3
- 2.Sec6#
- 1...Sa4
- 2.Rf4#
- 1...Sc4
- 2.Rf4#
- threat
- 1.Bf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 15
- Sets
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD::S(G),XQ(e)
- R(f);N_GUARD::R(A),XR(f)
- R(f);S_CUTB(g)::S(G)
- R(f);N_GUARD::R(A)
- B(g);N_GUARD::S(G),XB(g)
- B(g);S_CUTR(f)::R(A)
- B(g);N_GUARD::S(G)
- S(b);SBLOCK::B(I)+S(H),DCHECK
- Tries
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(g);XB(C)::B(I)+S(H),DCHECK
- R(f);::QAB1(B)
- Q(e);P_PINS(H)::QAB1(B)
- R(a);::B(I)+S(H),DCHECK
- B(g);::B(I)+S(H),DCHECK
- Refutation
- R(f);XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(d);P-FLIGHT::QAR1(B)
- Refutation
- R(f);CHECK,P_SPINR(f)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XB(C)::S(G)
- R(a);XR(A)::S(G)
- R(f);XB(C)::S(G)
- B(g);XB(C)::R(A)
- Q(e);::R(A)
- Q(e);N_GUARD::QAR1(B),XQ(e)
- Q(e);::S(G)
- R(a);::S(G)
- B(g);::S(G)
- S(b);::R(A)
- S(b);SBLOCK::B(I)+S(H),DCHECK
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).