MESON Chess Problem Database
Problem Display
PID: 141477 (6Bn/3p1q2/p2P4/P1pk4/3N1Q2/BP2R1p1/3pP1P1/3RbK2 w - - 0 1)
Beal, Edward W
Fenner, A Jack
Probleemblad, 1976
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qe5#
- 1...Qxg8
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...cxd4
- 2.Qf3#
- 1...c4
- 2.Re5#
- 1...Qe6
- Tries
- 1.Kg1?
- threat
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 2.Qe4#
- 1...Sg6
- 2.Bxf7#
- 1...Bf2+!
- threat
- 1.Sf5?
- threat
- 2.Se7#
- 2.Qf3#
- 2.Qe4#
- 1...Sg6
- 2.Qf3#
- 2.Qe4#
- 1...Kc6!
- threat
- 1.Bb4?
- 1...Qxg8
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 1...Qe6
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4
- 2.Re5#
- 1...cxb4!
- 1...Qxg8
- 1.Rxd2?
- 1...Qxg8
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 1...Qe6
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4
- 2.Re5#
- 2.Qf3#
- 2.Qf5#
- 1...Bxd2!
- 1...Qxg8
- 1.Re4?
- 1...Qxg8
- 2.Qe5#
- 1...Qe6
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4
- 2.Re5#
- 2.Qf5#
- 1...cxd4!
- 1...Qxg8
- 1.Re7?
- 1...Qxg8
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4
- 2.Re5#
- 1...Qe6!
- 1...Qxg8
- 1.Re8?
- 1...Qxg8
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4
- 2.Re5#
- 1...Qe6!
- 1...Qxg8
- 1.Qf3+?
- 1...Kxd4
- 2.Bb2#
- 1...Kxd6!
- 1...Kxd4
- 1.Qf5+?
- 1...Kxd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kxd6!
- 1...Kxd4
- 1.Qf6?
- 1...Qxg8
- 2.Qe5#
- 1...cxd4
- 2.Qf3#
- 1...Qe6
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sg6
- 2.Bxf7#
- 1...c4!
- 1...Qxg8
- 1.Qxf7+?
- 1...Kxd4
- 2.Qf4#
- 1...Kxd6
- 2.Qf4#
- 1...Sxf7!
- 1...Kxd4
- 1.Kg1?
- Keys
- 1.Rc3!
- threat
- 2.Rxc5#
- 1...cxd4
- 2.Qf5#
- 1...c4
- 2.bxc4#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(h);N_PINQ(I)::QAR1(I)
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- P(d);SBLOCK,XS(H)::QAB(I)
- P(d);::R1(G)
- Tries
- Try
- K(B);N_SPINQ(I),P-FLIGHT
- Threat
- QAR1(I)
- Vars
- S(i);N_GUARD::B(L),XQ(h)
- Refutation
- B(a);CHECK
- Try
- S(H);N_SPINQ(I),P_PINP(b)
- Threat
- DUALS(3)
- Refutation
- K(e);N_SPINP(b),N_SPINQ(h),S_FLIGHT
- Try
- B(E);
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- P(d);SBLOCK,XS(H)::QAB(I)
- Q(h);N_PINQ(I)::QAR1(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- P(d);::R1(G)
- Refutation
- P(d);XB(E)
- Try
- R(A);XP(b)
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- P(d);P_SPINP(d),XS(H)::QAB(I)
- Q(h);N_PINQ(I)::QAR1(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- Refutation
- B(a);XR(A)
- Try
- R(G);
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- Q(h);N_PINQ(I)::QAR1(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- Refutation
- P(d);XS(H)
- Try
- R(G);
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- P(d);SBLOCK,XS(H)::QAB(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- P(d);::R1(G)
- Refutation
- Q(h);N_PINQ(I)
- Try
- R(G);
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- P(d);SBLOCK,XS(H)::QAB(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- P(d);::R1(G)
- Refutation
- Q(h);N_PINQ(I)
- Try
- Q(I);CHECK
- Vars
- K(e);N_SPINQ(h),P-FLIGHT,P_SPINP(b),XS(H)::B(E)
- Refutation
- K(e);N_SPINQ(h),P-FLIGHT,P_SPINP(d),XP(K)
- Try
- Q(I);CHECK
- Refutation
- K(e);N_SPINQ(h),P-FLIGHT,P_SPINP(d),XP(K)
- Try
- Q(I);
- Vars
- Q(h);N_PINQ(I),N_SPINQ(h),XB(L)::QAR1(I)
- P(d);SBLOCK,XS(H)::QAB(I)
- Q(h);N_PINQ(I)::QAR1(I)
- B(a);N_PINQ(I)::QAR1(I)
- S(i);N_GUARD::B(L),XQ(h)
- Refutation
- P(d);
- Try
- Q(I);CHECK,N_SPINQ(I),XQ(h)
- Vars
- K(e);P-FLIGHT,P_SPINP(b),XS(H)::QAR2(I)
- K(e);P-FLIGHT,P_SPINP(d),XP(K)::QAB(I)
- Refutation
- S(i);P_SPINS(i),XQ(I)
- Try
- Actual
- R(G);
- Threat
- R1(G),XP(d)
- Vars
- P(d);SBLOCK,XS(H)::QAR2(I)
- P(d);OGATE::P(F),XP(d)
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).