MESON Chess Problem Database
Problem Display
PID: 183422 (2N5/R7/2k1Pp2/1pr2Q1K/1qR1n3/3prnb1/4N3/3b3B w - - 0 1)
Densham, E
The Problemist, 1943
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Sd4#
- 1...Sf2
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sd6
- 2.Sd4#
- 1...Sd2
- Tries
- 1.Se7+?
- 1...Kd6
- 2.Rd7#
- 1...Kb6!
- 1...Kd6
- 1.Se7+?
- Keys
- 1.e7!
- threat
- 2.e8Q#
- 2.e8B#
- 1...Qxc4
- 2.e8Q#
- 2.e8B#
- 1...Rxe2
- 2.e8Q#
- 2.e8B#
- 1...Rxc4
- 2.e8Q#
- 2.e8B#
- 1...Bxe2
- 2.e8Q#
- 2.e8B#
- 1...dxe2
- 2.e8Q#
- 2.e8B#
- 1...bxc4
- 2.e8Q#
- 2.e8B#
- 1...Be5
- 2.Qd7#
- 1...Se5
- 2.Qe6#
- 1...Qe1
- 2.e8Q#
- 2.e8B#
- 1...Qd2
- 2.e8Q#
- 2.e8B#
- 1...Qa3
- 2.e8Q#
- 2.e8B#
- 1...Qc3
- 2.e8Q#
- 2.e8B#
- 1...Qa5
- 2.e8Q#
- 2.e8B#
- 1...Qb1
- 2.e8Q#
- 2.e8B#
- 1...Qb2
- 2.e8Q#
- 2.e8B#
- 1...Qb3
- 2.e8Q#
- 2.e8B#
- 1...Qa4
- 2.e8Q#
- 2.e8B#
- 1...Bc2
- 2.e8Q#
- 2.e8B#
- 1...Bb3
- 2.e8Q#
- 2.e8B#
- 1...Ba4
- 2.e8Q#
- 2.e8B#
- 1...Be1
- 2.e8Q#
- 2.e8B#
- 1...Bf2
- 2.e8Q#
- 2.e8B#
- 1...Bh2
- 2.e8Q#
- 2.e8B#
- 1...Bf4
- 2.e8Q#
- 2.e8B#
- 1...Bh4
- 2.e8Q#
- 2.e8B#
- 1...Bd6
- 2.e8Q#
- 2.e8B#
- 1...Bc7
- 2.e8Q#
- 2.e8B#
- 1...Bb8
- 2.e8Q#
- 2.e8B#
- 1...Se1
- 2.e8Q#
- 2.e8B#
- 1...Sg1
- 2.e8Q#
- 2.e8B#
- 1...Sfd2
- 2.e8Q#
- 2.e8B#
- 1...Sh2
- 2.e8Q#
- 2.e8B#
- 1...Sd4
- 2.e8Q#
- 2.e8B#
- 1...Sh4
- 2.e8Q#
- 2.e8B#
- 1...Sfg5
- 2.Qd7#
- 2.e8Q#
- 2.e8B#
- 1...Sed2
- 2.Sd4#
- 1...Sf2
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Seg5
- 2.Sd4#
- 2.Qd7#
- 1...Sd6
- 2.Sd4#
- 1...d2
- 2.e8Q#
- 2.e8B#
- threat
- 1.e7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(g);P_SPINS(d)::S(B)
- S(g);N_PINQ(D),P_SPINS(d)::S(B)
- Tries
- Try
- S(H);CHECK
- Vars
- K(j);N_SPINR(i),P-FLIGHT::R1(G)
- Refutation
- K(j);N_SPINR(i),P-FLIGHT
- Try
- Actual
- P(F);
- Threat
- P=Q
- Vars
- Q(f);N_SPINR(i),XR(C)::P=Q
- R(c);XS(B)::P=Q
- R(i);N_PINQ(D),N_SPINR(i),XR(C)::P=Q
- B(a);XS(B)::P=Q
- P(b);XS(B)::P=Q
- P(h);N_SPINR(i),XR(C)::P=Q
- B(e);N_PINQ(D)::QAB1(D)
- S(d);N_PINQ(D),P_PINS(B),P_SPINS(g)::QAR2(D)
- Q(f);::P=Q
- B(a);::P=Q
- B(e);::P=Q
- S(d);P_PINS(B),P_SPINS(g)::P=Q
- S(g);P_SPINS(d)::S(B)
- P(b);::P=Q
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).