MESON Chess Problem Database
Problem Display
PID: 709 (K2B1n2/p2pnq2/1Npk1rRN/2p1RP1p/2brp3/8/3Q4/8 w - - 0 1)
Dobbs, Gilbert S
British Chess Magazine, 1939
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Qh2#
- 1...Qxg6
- 2.Sxc4#
- 1...Qe8
- 2.Sxc4#
- 1...Qg7
- 2.Sxc4#
- 1...Qh7
- 2.Sxc4#
- 1...Rd5
- 2.Sxc4#
- 2.Sxf7#
- 1...Re6
- 2.Sxc4#
- 2.Sxf7#
- 1...Bf1
- 2.Sxf7#
- 1...Be2
- 2.Sxf7#
- 1...Bd3
- 2.Sxf7#
- 1...Bb5
- 2.Sxf7#
- 1...Ba6
- 2.Sxf7#
- 1...Sd5
- 2.Sxf7#
- 1...Se6
- 2.Sxc4#
- 1...Kxe5
- Tries
- 1.Kb7?
- threat
- 2.Bc7#
- 1...Kxe5
- 2.Qh2#
- 1...Sd5
- 2.Sxf7#
- 1...Se6
- 2.Sxc4#
- 1...Ba6+!
- threat
- 1.Rxf6+?
- 1...Qe6
- 2.Sxc4#
- 2.Sf7#
- 1...Qxf6
- 2.Sxc4#
- 1...Be6
- 2.Sc4#
- 2.Sxf7#
- 1...Se6
- 2.Sxc4#
- 2.Sxf7#
- 1...Kxe5!
- 1...Qe6
- 1.Qf4?
- threat
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Rxe7#
- 1...Sxf5
- 2.Sc8#
- 2.Sxf5#
- 2.Rxe4#
- 2.Re7#
- 2.Re8#
- 1...Sexg6
- 2.Sc8#
- 2.Rd5#
- 2.Re6#
- 1...Sfxg6
- 2.Rd5#
- 2.Re6#
- 1...Qd5
- 2.Rxd5#
- 2.Re6#
- 1...Qe6
- 2.Rd5#
- 2.Rxe6#
- 1...Rd5
- 2.Sxc4#
- 2.Sxf7#
- 2.Rxd5#
- 2.Re6#
- 1...Re6
- 2.Sxf7#
- 2.Rxe4#
- 2.Rd5#
- 2.Rexe6#
- 1...Bd5
- 2.Rxe4#
- 2.Rxd5#
- 2.Re6#
- 2.Rxe7#
- 1...Be6
- 2.Rxe4#
- 2.Rd5#
- 2.Rxe6#
- 1...Sd5
- 2.Sc8#
- 2.Sxf7#
- 2.Rxd5#
- 2.Re6#
- 1...Sc8
- 2.Sxc8#
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Sg8
- 2.Sc8#
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Se6
- 2.Rd5#
- 2.Rxe6#
- 1...e3
- 2.Re4#
- 2.Rd5#
- 2.Re6#
- 1...axb6!
- threat
- 1.Qh2?
- threat
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Rxe7#
- 1...Qxg6
- 2.Rd5#
- 2.Re6#
- 1...Rxg6
- 2.Rd5#
- 2.Re6#
- 1...Sxf5
- 2.Sc8#
- 2.Sxf5#
- 1...Sexg6
- 2.Sc8#
- 2.Rd5#
- 2.Re6#
- 1...Sfxg6
- 2.Rd5#
- 2.Re6#
- 1...Qd5
- 2.Rxd5#
- 2.Re6#
- 1...Qe6
- 2.Rd5#
- 2.Rxe6#
- 1...Rd2
- 2.Rd5#
- 2.Re6#
- 1...Rd3
- 2.Rd5#
- 2.Re6#
- 1...Rd5
- 2.Sxc4#
- 2.Sxf7#
- 2.Rxd5#
- 2.Re6#
- 1...Re6
- 2.Sxf7#
- 2.Rxe4#
- 2.Rd5#
- 2.Rexe6#
- 1...Bd5
- 2.Rxe4#
- 2.Rxd5#
- 2.Re6#
- 2.Rxe7#
- 1...Be6
- 2.Rxe4#
- 2.Rd5#
- 2.Rxe6#
- 1...Sd5
- 2.Sc8#
- 2.Sxf7#
- 2.Rxd5#
- 2.Re6#
- 1...Sc8
- 2.Sxc8#
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Sg8
- 2.Sc8#
- 2.Rxe4#
- 2.Rd5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Se6
- 2.Rd5#
- 2.Rxe6#
- 1...e3
- 2.Re4#
- 2.Rd5#
- 2.Re6#
- 1...axb6!
- threat
- 1.Qxd4+?
- 1...Qd5
- 2.Sxc4#
- 2.Sf7#
- 1...Bd5
- 2.Sc4#
- 2.Sxf7#
- 1...Sd5
- 2.Sxc4#
- 2.Sc8#
- 2.Sxf7#
- 1...cxd4!
- 1...Qd5
- 1.Kb7?
- Keys
- 1.Kb8!
- threat
- 2.Bc7#
- 1...Kxe5
- 2.Qh2#
- 1...Qe8
- 2.Sxc4#
- 1...Sd5
- 2.Sxf7#
- 1...Se6
- 2.Sxc4#
- threat
- 1.Kb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- K(g);N_SPINR(b),OGATEB,S_FLIGHT,XR(B)::QAB(A)
- Q(l);N_GUARD,XR(E)::S(D),XB(a)
- Q(l);N_GUARD,P_PINB(H)::S(D),XB(a)
- Q(l);N_GUARD::S(D),XB(a)
- B(a);N_GUARD::S(F),XQ(l)
- B(a);N_GUARD,N_SPINR(b),P_SPINR(h)::S(F),XQ(l)
- S(k);N_SPINR(b),P_SPINR(h),S_CUTB(a)::S(F),XQ(l)
- S(m);S_CUTQ(l)::S(D),XB(a)
- Tries
- Try
- K(G);S_FLIGHT
- Threat
- B(H)
- Vars
- K(g);N_SPINR(b),OGATEB,S_FLIGHT,XR(B)::QAB(A)
- S(k);N_SPINR(b),P_SPINR(h),S_CUTB(a)::S(F),XQ(l)
- S(m);S_CUTQ(l)::S(D),XB(a)
- Refutation
- B(a);CHECK
- Try
- R(E);CHECK,XR(h)
- Vars
- Q(l);XR(E)::S(D),XB(a)
- Refutation
- K(g);N_SPINR(b),S_FLIGHT,XR(B)
- Try
- Q(A);N_PINR(b),P_PINR(h)
- Threat
- DUALS(4)
- Refutation
- P(i);XS(D)
- Try
- Q(A);N_PINR(b),P_PINR(h)
- Threat
- DUALS(4)
- Refutation
- P(i);XS(D)
- Try
- Q(A);CHECK,P_PINR(h),XR(b)
- Refutation
- P(d);XQ(A)
- Try
- Actual
- K(G);P-FLIGHT
- Threat
- B(H)
- Vars
- K(g);N_SPINR(b),OGATEB,S_FLIGHT,XR(B)::QAB(A)
- Q(l);N_GUARD,P_PINB(H)::S(D),XB(a)
- S(k);N_SPINR(b),P_SPINR(h),S_CUTB(a)::S(F),XQ(l)
- S(m);S_CUTQ(l)::S(D),XB(a)
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).