MESON Chess Problem Database
Problem Display
PID: 36268 (8/2pp4/2N1p1KB/1N5Q/4k3/r4R2/2Pn4/r2R4 w - - 0 1)
Donnelly, Michael J
Manchester Evening News, 1974
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sc3#
- 2.Re3#
- 1...Rc3
- 2.Sxc3#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Rxe3#
- 2.Rf4#
- 1...Rxf3
- 2.Qe5#
- 1...Ra4
- 2.Sc3#
- 2.Re3#
- 1...Ra5
- 2.Sc3#
- 2.Re3#
- 1...Ra6
- 2.Sc3#
- 2.Re3#
- 1...Ra7
- 2.Sc3#
- 2.Re3#
- 1...Ra8
- 2.Sc3#
- 2.Re3#
- 1...Sb1
- 2.Rd4#
- 2.Qg4#
- 1...Sf1
- 2.Rd4#
- 2.Qg4#
- 1...Sb3
- 2.Sc3#
- 2.Re3#
- 2.Qg4#
- 1...Sxf3
- 2.Qg4#
- 1...Sc4
- 2.Rd4#
- 2.Qg4#
- 1...d5
- 2.Qg4#
- 1...Ra2
- Tries
- 1.Sxc7?
- threat
- 2.Qg4#
- 1...Rxf3
- 2.Qe5#
- 1...dxc6!
- threat
- 1.Re1+?
- 1...Re3
- 2.Sc3#
- 2.Rexe3#
- 2.Rfxe3#
- 2.Rf4#
- 1...Rxe1!
- 1...Re3
- 1.Rxd2?
- threat
- 2.Rd4#
- 2.Qg4#
- 1...Rxf3
- 2.Rd4#
- 2.Qe5#
- 1...dxc6
- 2.Rd4#
- 1...Rd1
- 2.Qg4#
- 1...Rd3
- 2.cxd3#
- 1...Ra4
- 2.Sc3#
- 2.Re2#
- 2.Re3#
- 2.Qg4#
- 1...e5
- 2.Qg4#
- 2.Qf5#
- 1...Rg1+!
- threat
- 1.Rxa3?
- threat
- 2.Sc3#
- 2.Re3#
- 2.Qe5#
- 1...dxc6
- 2.Re3#
- 1...e5
- 2.Sc3#
- 2.Qxe5#
- 1...Sb1
- 2.Re1#
- 2.Rd4#
- 2.Re3#
- 2.Qe2#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 2.Qe5#
- 1...Sf1
- 2.Sc3#
- 2.Rd4#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 2.Qe5#
- 1...Sb3
- 2.Sc3#
- 2.Qe2#
- 2.Qg4#
- 2.Qh1#
- 1...Sf3
- 2.Sc3#
- 2.Re3#
- 2.Qxf3#
- 2.Qg4#
- 1...Sc4
- 2.Sc3#
- 2.Rd4#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 1...d6
- 2.Sc3#
- 2.Re3#
- 1...Rxa3!
- threat
- 1.Rd3?
- threat
- 2.Rd4#
- 2.Qe2#
- 2.Qg4#
- 2.Qh4#
- 2.Qe5#
- 1...dxc6
- 2.Rd4#
- 2.Qe2#
- 1...Ra4
- 2.Sc3#
- 2.Re3#
- 2.Qe2#
- 2.Qg4#
- 2.Qh4#
- 2.Qe5#
- 1...Sf1
- 2.Rd4#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 2.Qe5#
- 1...Sb3
- 2.Sc3#
- 2.Re3#
- 2.Qe2#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 2.Qe5#
- 1...Sf3
- 2.Qxf3#
- 2.Qg4#
- 1...Sc4
- 2.Rd4#
- 2.Qf3#
- 2.Qg4#
- 2.Qh1#
- 2.Qh4#
- 1...e5
- 2.Qe2#
- 2.Qg4#
- 2.Qh4#
- 2.Qxe5#
- 2.Qf5#
- 1...d6
- 2.Rd4#
- 2.Qe2#
- 2.Qg4#
- 2.Qh4#
- 1...Rxd3!
- threat
- 1.Rf5?
- threat
- 2.Re5#
- 2.Qg4#
- 2.Qh4#
- 1...exf5
- 2.Qxf5#
- 1...e5
- 2.Rxe5#
- 1...Rf3
- 2.Re5#
- 1...Rh3
- 2.Re5#
- 2.Qg4#
- 1...Sf3
- 2.Qg4#
- 1...Sc4
- 2.Rd4#
- 2.Qg4#
- 2.Qh4#
- 1...d6
- 2.Qg4#
- 2.Qh4#
- 1...Rg3+!
- threat
- 1.Rf6?
- threat
- 2.Qe5#
- 1...dxc6
- 2.Rxe6#
- 1...e5
- 2.Qxe5#
- 1...Sf3
- 2.Qg4#
- 1...Sc4
- 2.Rd4#
- 2.Qg4#
- 2.Qh4#
- 1...d6
- 2.Rxe6#
- 1...Rg3+!
- threat
- 1.c3?
- threat
- 2.Re3#
- 1...Rxc3
- 2.Sxc3#
- 1...Sxf3
- 2.Qg4#
- 1...Sf1
- 2.Rd4#
- 2.Qg4#
- 1...Sc4
- 2.Rd4#
- 2.Qg4#
- 1...e5!
- threat
- 1.Sxc7?
- Keys
- 1.Qh1!
- threat
- 2.Re3#
- 1...Kd5
- 2.Rc3#
- 1...Rxf3
- 2.Sc3#
- 1...Sxf3
- 2.Rd4#
- 1...Re3
- 2.Rxe3#
- 2.Rf4#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::S(D),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);SBLOCK,XR(C)::QAR1(E)
- S(b);XR(C)::QAR2(E)
- P(g);SBLOCK::QAR2(E)
- Tries
- Try
- S(D);XP(f)
- Threat
- QAR2(E)
- Vars
- R(c);SBLOCK,XR(C)::QAR1(E)
- Refutation
- P(g);XS(F)
- Try
- R(A);CHECK
- Refutation
- R(a);XR(A)
- Try
- R(A);XS(b)
- Threat
- DUALS(2)
- Vars
- P(g);XS(F)::R1(A)
- R(a);::QAR2(E)
- R(c);OGATE::P(B),XR(c)
- Refutation
- R(a);CHECK
- Try
- R(C);XR(c)
- Threat
- DUALS(3)
- Vars
- P(g);XS(F)::R1(C)
- Refutation
- R(a);XR(C)
- Try
- R(C);
- Threat
- DUALS(5)
- Refutation
- R(c);XR(C)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- P(e);OGATE,XR(C)::QAB1(E),XP(e)
- P(e);::R1(C),XP(e)
- R(c);::R1(C)
- S(b);::QAR2(E)
- Refutation
- R(c);CHECK
- Try
- R(C);
- Threat
- QAR1(E)
- Vars
- P(g);N_GUARD,XS(F)::R(C),XP(e)
- P(e);::QAR1(E),XP(e)
- S(b);::QAR2(E)
- P(g);N_GUARD::R(C),XP(e)
- Refutation
- R(c);CHECK
- Try
- P(B);
- Threat
- R1(C)
- Vars
- R(c);XP(B)::S(D),XR(c)
- S(b);XR(C)::QAR2(E)
- Refutation
- P(e);
- Try
- Actual
- Q(E);
- Threat
- QAB(E)+R(C),DCHECK
- Vars
- K(d);P_SPINS(b),S_FLIGHT::QAB(E)+R(C)
- R(c);N_GUARD,P_SPINR(c),XR(C)::S(D)
- S(b);OGATE,P_SPINS(b),XR(C)::R1(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).