MESON Chess Problem Database
Problem Display
PID: 76659 (1B6/2n1R3/r3N1K1/1Nb1kPp1/2n4R/3Q2p1/Bp6/4q3 w - - 0 1)
Holladay, Edgar Dinwiddie
6th Prize, Milwaukee Journal, 1950
#2
9 + 9
| 6232 | Holladay Chess Problems | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Re4#
- 2.Qe4#
- 1...Qf2
- 2.Re4#
- 2.Qe4#
- 1...Qc3
- 2.Re4#
- 2.Qe4#
- 1...Qb4
- 2.Re4#
- 2.Qe4#
- 1...Qa5
- 2.Re4#
- 2.Qe4#
- 1...Qa1
- 2.Re4#
- 2.Qe4#
- 1...Qb1
- 2.Re4#
- 1...Qc1
- 2.Re4#
- 2.Qe4#
- 1...Qd1
- 2.Re4#
- 2.Qe4#
- 1...Qf1
- 2.Re4#
- 2.Qe4#
- 1...Qg1
- 2.Re4#
- 2.Qe4#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Rxa2
- 2.Sxc5#
- 1...Ra3
- 2.Sxc5#
- 1...Ra4
- 2.Sxc5#
- 1...Ra5
- 2.Sxc5#
- 1...Rxe6+
- 2.Rxe6#
- 1...Ra7
- 2.Sxc5#
- 1...Ra8
- 2.Sxc5#
- 1...Ba3
- 2.Qd4#
- 1...Be3
- 2.Re4#
- 2.Qe4#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Bb6
- 2.Sf4#
- 2.Sc5#
- 2.Sxg5#
- 2.Sexc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Bd6
- 2.Qd4#
- 1...Bxe7
- 2.Qd4#
- 1...Sd2
- 2.Qd5#
- 1...Sa3
- 2.Qd5#
- 1...Se3
- 2.Re4#
- 2.Qe4#
- 1...Sa5
- 2.Qd5#
- 1...Sb6
- 2.Sxc5#
- 1...Sd6
- 2.Sexc7#
- 1...Qd2
- Tries
- 1.Sc3?
- threat
- 2.Qd5#
- 1...Rxe6+
- 2.Rxe6#
- 1...Qxc3
- 2.Re4#
- 1...Bd4
- 2.Qxd4#
- 1...Qd2
- 2.Re4#
- 1...Qd1
- 2.Re4#
- 2.Qxg3#
- 1...Qh1
- 2.Qxg3#
- 1...Qe4
- 2.Rxe4#
- 1...Bd6
- 2.Qd4#
- 1...Se3
- 2.Re4#
- 1...Sb6
- 2.Sxc5#
- 1...Sd6
- 2.Sxc7#
- 1...Rd6!
- threat
- 1.Sd6?
- threat
- 2.Sxc4#
- 2.Sf7#
- 2.Sxc7#
- 1...Bxd6
- 2.Qd4#
- 1...Sxd6
- 2.Sxc7#
- 1...Sxe6
- 2.Sxc4#
- 2.Sf7#
- 2.Rxe6#
- 1...gxh4
- 2.Sxc4#
- 2.Sf7#
- 1...Bd4
- 2.Qxd4#
- 1...Qc3
- 2.Sf7#
- 2.Sxc7#
- 2.Re4#
- 1...Qb4
- 2.Sf7#
- 2.Sxc7#
- 2.Re4#
- 1...Qc1
- 2.Sf7#
- 2.Sxc7#
- 2.Re4#
- 1...Qe4
- 2.Sf7#
- 2.Sxc7#
- 2.Rxe4#
- 1...Ra4
- 2.Sf7#
- 2.Sxc7#
- 1...Sd2
- 2.Sf7#
- 2.Sxc7#
- 1...Sa3
- 2.Sf7#
- 2.Sxc7#
- 1...Se3
- 2.Sf7#
- 2.Sxc7#
- 2.Re4#
- 1...Sa5
- 2.Sf7#
- 2.Sxc7#
- 1...Sb6
- 2.Sf7#
- 2.Sxc7#
- 1...Sb5
- 2.Sxc4#
- 2.Sf7#
- 2.Sf4#
- 2.Sxc5#
- 2.Sxg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Sd5
- 2.Sxc4#
- 2.Sf7#
- 1...Sa8
- 2.Sxc4#
- 2.Sf7#
- 2.Sf4#
- 2.Sxc5#
- 2.Sxg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Se8
- 2.Sxc4#
- 2.Sf7#
- 2.Sf4#
- 2.Sxc5#
- 2.Sxg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...g4
- 2.Sxc4#
- 2.Sf7#
- 1...Rxd6!
- threat
- 1.Sxc7?
- threat
- 2.Qd5#
- 1...Rxe6+
- 2.Rxe6#
- 1...Bd4
- 2.Qxd4#
- 1...Qd2
- 2.Re4#
- 1...Qd1
- 2.Re4#
- 2.Qxg3#
- 1...Qh1
- 2.Qxg3#
- 1...Qe4
- 2.Rxe4#
- 1...Se3
- 2.Re4#
- 1...Sb6
- 2.Sxc5#
- 1...Rd6!
- threat
- 1.Bxc4?
- threat
- 2.Qd5#
- 1...Rxe6+
- 2.Rxe6#
- 1...Qd2
- 2.Re4#
- 2.Qe4#
- 1...Qd1
- 2.Re4#
- 2.Qe4#
- 2.Qxg3#
- 1...Qh1
- 2.Qxg3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bd4
- 2.Qxd4#
- 1...Bd6
- 2.Qd4#
- 1...Rd6!
- threat
- 1.Bxc7+?
- 1...Bd6
- 2.Sf4#
- 2.Sc5#
- 2.Sxg5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qd4#
- 1...Sd6
- 2.Sed4#
- 2.Sf4#
- 2.Sxc5#
- 2.Sxg5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qd5#
- 1...Rd6!
- 1...Bd6
- 1.Sc3?
- Keys
- 1.Sa3!
- threat
- 2.Sxc4#
- 1...Rxe6+
- 2.Rxe6#
- 1...Rxa3
- 2.Sxc5#
- 1...Bxa3
- 2.Qd4#
- 1...Sxa3
- 2.Qd5#
- 1...Bd4
- 2.Qxd4#
- 1...Qc3
- 2.Re4#
- 1...Qb4
- 2.Re4#
- 1...Qc1
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Ra4
- 2.Sxc5#
- 1...Sd2
- 2.Qd5#
- 1...Se3
- 2.Re4#
- 1...Sa5
- 2.Qd5#
- 1...Sb6
- 2.Sxc5#
- 1...Sd6
- 2.Sxc7#
- threat
- 1.Sa3!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::R1(C)
- R(h);N_PINS(F),XB(A)::R(H)+S(F),XB(e)
- R(h);N_PINS(F)::R(H)+S(F),XB(e)
- R(h);CHECK,OGATE,P_SPINR(h),XS(F)::R1(H),XR(h)
- B(e);N_GUARD::QAB1(B)
- B(e);N_GUARD::QAB1(B),XB(e)
- B(e);N_GUARD,N_PINS(F),N_SPINS(i)::QAB1(B)
- B(e);N_GUARD,XR(H)::QAB1(B)
- S(d);::QAR1(B)
- S(d);N_PINS(F)::R(H)+S(F),XB(e)
- S(d);N_PINS(F),N_SPINS(i)::R(H)+S(F),XS(i)
- Tries
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XS(F)::R1(H),XR(h)
- Q(a);N_GUARD,XS(D)::R1(C)
- B(e);N_GUARD::QAB1(B),XB(e)
- Q(a);N_GUARD::R1(C)
- Q(a);N_GUARD::QAB(B),XP(c)
- Q(a);N_GUARD,P_PINP(E)::R1(C),XQ(a)
- B(e);N_GUARD,N_PINS(F),N_SPINS(i)::QAB1(B)
- S(d);S_CUTQ(a)::R1(C)
- S(d);N_PINS(F)::R(H)+S(F),XB(e)
- S(d);N_PINS(F),N_SPINS(i)::R(H)+S(F),XS(i)
- Refutation
- R(h);N_SPINS(i)
- Try
- S(D);N_PINS(i),N_SPINS(F)
- Threat
- DUALS(3)
- Vars
- B(e);N_GUARD,XS(D)::QAB1(B)
- S(d);XS(D)::R(H)+S(F),XS(i)
- B(e);N_GUARD::QAB1(B),XB(e)
- Refutation
- R(h);P_PINS(F),XS(D)
- Try
- S(D);XS(i)
- Threat
- QAR1(B)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XS(F)::R1(H),XR(h)
- B(e);N_GUARD::QAB1(B),XB(e)
- Q(a);N_GUARD::R1(C)
- Q(a);N_GUARD::QAB(B),XP(c)
- Q(a);N_GUARD,P_PINP(E)::R1(C),XQ(a)
- S(d);S_CUTQ(a)::R1(C)
- S(d);N_PINS(F)::R(H)+S(F),XB(e)
- Refutation
- R(h);
- Try
- B(A);XS(d)
- Threat
- QAR1(B)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XS(F)::R1(H),XR(h)
- Q(a);N_GUARD::QAB(B),XP(c)
- B(e);N_GUARD::QAB1(B),XB(e)
- B(e);N_GUARD,N_PINS(F),N_SPINS(i)::QAB1(B)
- Refutation
- R(h);N_SPINS(i)
- Try
- B(I);CHECK,XS(i)
- Refutation
- R(h);P_SPINR(h)
- Try
- Actual
- S(D);
- Threat
- S(D),XS(d)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XS(F)::R1(H),XR(h)
- R(h);N_PINS(F),XS(D)::R(H)+S(F),XB(e)
- B(e);N_GUARD,XS(D)::QAB1(B)
- S(d);XS(D)::QAR1(B)
- B(e);N_GUARD::QAB1(B),XB(e)
- Q(a);N_GUARD::R1(C)
- Q(a);N_GUARD,P_PINP(E)::R1(C),XQ(a)
- R(h);N_PINS(F)::R(H)+S(F),XB(e)
- S(d);::QAR1(B)
- S(d);S_CUTQ(a)::R1(C)
- S(d);N_PINS(F)::R(H)+S(F),XB(e)
- S(d);N_PINS(F),N_SPINS(i)::R(H)+S(F),XS(i)
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).