MESON Chess Problem Database
Problem Display
PID: 287232 (6Nk/P2PpR2/4p1pN/4r3/4b1nQ/5p2/1r3p2/B1b3nK w - - 0 1)
Holladay, Edgar Dinwiddie
The Problemist, 1953
#2
8 + 12
| 6490 | yacpdb | 2026 |
SOLUTION
- SOUND
- Tries
- 1.Sf6?
- threat
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bxh6
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Sxh6
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...exf6
- 2.d8Q#
- 2.d8R#
- 1...f1Q
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...f1S
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...f1B
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...f1R
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb1
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Ra2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rc2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rd2
- 2.Rh7#
- 1...Re2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb3
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb4
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rbb5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb6
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb7
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rb8
- 2.Rh7#
- 2.axb8Q#
- 2.axb8R#
- 1...Ra5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Reb5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rc5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rd5
- 2.Rh7#
- 1...Rf5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rg5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Rh5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bd2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Be3
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bf4
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bg5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bb1
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bc2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bd3
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bf5
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Bc6
- 2.Rh7#
- 1...Bb7
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Ba8
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Se2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Sh2
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...Se3
- 2.Sf5#
- 2.Rh7#
- 2.d8Q#
- 2.d8R#
- 1...g5
- 2.d8Q#
- 2.d8R#
- 1...Sxf6!
- threat
- 1.Sf6?
- Keys
- 1.Sxe7!
- threat
- 2.d8Q#
- 2.d8R#
- 1...Bxh6
- 2.d8Q#
- 2.d8R#
- 1...Sxh6
- 2.Qf6#
- 2.d8Q#
- 2.d8R#
- 1...f1Q
- 2.d8Q#
- 2.d8R#
- 1...f1S
- 2.d8Q#
- 2.d8R#
- 1...f1B
- 2.d8Q#
- 2.d8R#
- 1...f1R
- 2.d8Q#
- 2.d8R#
- 1...Rb1
- 2.d8Q#
- 2.d8R#
- 1...Ra2
- 2.d8Q#
- 2.d8R#
- 1...Rc2
- 2.d8Q#
- 2.d8R#
- 1...Rd2
- 2.Sxg4#
- 1...Re2
- 2.d8Q#
- 2.d8R#
- 1...Rb3
- 2.d8Q#
- 2.d8R#
- 1...Rb4
- 2.d8Q#
- 2.d8R#
- 1...Rbb5
- 2.d8Q#
- 2.d8R#
- 1...Rb6
- 2.d8Q#
- 2.d8R#
- 1...Rb7
- 2.d8Q#
- 2.d8R#
- 1...Rb8
- 2.axb8Q#
- 2.axb8R#
- 1...Ra5
- 2.d8Q#
- 2.d8R#
- 1...Reb5
- 2.d8Q#
- 2.d8R#
- 1...Rc5
- 2.d8Q#
- 2.d8R#
- 1...Rd5
- 2.a8Q#
- 2.a8R#
- 1...Rf5
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Rg5
- 2.d8Q#
- 2.d8R#
- 1...Rh5
- 2.d8Q#
- 2.d8R#
- 1...Bd2
- 2.d8Q#
- 2.d8R#
- 1...Be3
- 2.d8Q#
- 2.d8R#
- 1...Bf4
- 2.d8Q#
- 2.d8R#
- 1...Bg5
- 2.d8Q#
- 2.d8R#
- 1...Bb1
- 2.d8Q#
- 2.d8R#
- 1...Bc2
- 2.d8Q#
- 2.d8R#
- 1...Bd3
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Bf5
- 2.d8Q#
- 2.d8R#
- 1...Bc6
- 2.Sxg6#
- 1...Bb7
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Ba8
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Se2
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.d8Q#
- 2.d8R#
- 1...Sh2
- 2.Qf6#
- 2.d8Q#
- 2.d8R#
- 1...Se3
- 2.Shf5#
- 2.Qf6#
- 2.d8Q#
- 2.d8R#
- 1...Sf6
- 2.Qxf6#
- 1...g5
- 2.d8Q#
- 2.d8R#
- threat
- 1.Sxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- P(k);XS(H)::P=Q
- R(c);::R1(G)
- R(h);::R1(G)
- B(f);::R1(G)
- P(j);::P=Q
- Refutation
- S(g);XS(H)
- Try
- Actual
- S(H);XP(k)
- Threat
- P=Q
- Vars
- B(a);P_SPINB(a),XS(D)::P=Q
- P(d);::P=Q
- R(c);P_SPINR(h)::P=Q
- R(c);P_SPINR(h),S_CUTB(a)::QAR(C)+S(D),XS(g)
- R(c);OGATE,P_SPINR(h)::PXR(c)=Q
- R(h);P_SPINR(c)::P=Q
- R(h);P_SPINR(c),S_CUTB(f)::P=Q
- R(h);P_PINQ(C),P_SPINR(c)::P=Q
- B(a);::P=Q
- B(f);::P=Q
- B(f);N_GUARD::S(H),XP(j)
- S(b);::P=Q
- S(g);N_GUARD::QAB(C),XS(g)
- P(j);::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).