MESON Chess Problem Database
Problem Display
PID: 77107 (1K1bBNr1/1R1p2n1/2k5/P1p5/1pQp4/2P4b/2N4B/1rnq4 w - - 0 1)
Holladay, Edgar Dinwiddie
Probleemblad, 1958
#2
9 + 12
| 6232 | Holladay Chess Problems | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Sxd4#
- 1...Qf3
- 2.Sxd4#
- 1...Qh5
- 2.Sxd4#
- 1...Qe1
- 2.Sxd4#
- 1...Qf1
- 2.Sxd4#
- 1...Qh1
- 2.Sxd4#
- 1...Ra1
- 2.Sxb4#
- 1...Bf1
- 2.Bxd7#
- 1...Bg2
- 2.Bxd7#
- 1...Bh4
- 2.Rb6#
- 2.Rc7#
- 1...Bg5
- 2.Rb6#
- 2.Rc7#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Rb6#
- 2.Rc7#
- 1...Bc7+
- 2.Rxc7#
- 1...Be7
- 2.Rb6#
- 2.Rc7#
- 1...Sb3
- 2.Sxb4#
- 1...Sd3
- 2.Sxd4#
- 1...Sf5
- 2.Bxd7#
- 1...Se6
- 2.Bxd7#
- 1...b3
- 2.Sb4#
- 1...d3
- 2.Sd4#
- 2.Qe4#
- 1...Qe2
- Tries
- 1.Se3?
- threat
- 2.Qb5#
- 2.Qd5#
- 1...Bc7+
- 2.Rxc7#
- 1...bxc3
- 2.Qd5#
- 1...dxc3
- 2.Qb5#
- 1...Qe2
- 2.Qd5#
- 1...Qb3
- 2.Qb5#
- 1...Qf3
- 2.Qb5#
- 1...Qa4
- 2.Qd5#
- 1...Qh5
- 2.Qb5#
- 1...Qf1
- 2.Qd5#
- 1...Qh1
- 2.Qb5#
- 1...Qd3
- 2.Qd5#
- 1...Bf1
- 2.Bxd7#
- 2.Qd5#
- 1...Bg2
- 2.Bxd7#
- 2.Qb5#
- 1...Be6
- 2.Qb5#
- 1...Bb6
- 2.Rxb6#
- 1...dxe3!
- threat
- 1.Se6?
- threat
- 2.Sxd8#
- 2.Bxd7#
- 2.Qxc5#
- 1...Bc7+
- 2.Rxc7#
- 1...Rxe8
- 2.Qxc5#
- 1...Bxa5
- 2.Qxc5#
- 1...Sxe6
- 2.Bxd7#
- 1...Sxe8
- 2.Sxd8#
- 2.Qxc5#
- 1...dxc3
- 2.Sxd8#
- 2.Qxc5#
- 1...Qh5
- 2.Scxd4#
- 2.Sexd4#
- 2.Sxd8#
- 2.Bxd7#
- 1...Bh4
- 2.Rb6#
- 2.Rc7#
- 2.Qxc5#
- 1...Bg5
- 2.Rb6#
- 2.Rc7#
- 2.Qxc5#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Rb6#
- 2.Rc7#
- 2.Qxc5#
- 1...Be7
- 2.Rb6#
- 2.Rc7#
- 1...Sb3
- 2.Sxb4#
- 2.Sxd8#
- 2.Bxd7#
- 1...Sd3
- 2.Scxd4#
- 2.Sexd4#
- 2.Sxd8#
- 2.Bxd7#
- 1...Bxe6!
- threat
- 1.Rb5?
- threat
- 2.Rxc5#
- 2.Qxc5#
- 1...Bxa5
- 2.Qxc5#
- 1...bxc3
- 2.Qxc5#
- 1...Qh5
- 2.Sxd4#
- 1...Bb6
- 2.Rxb6#
- 1...Be7
- 2.Rb6#
- 1...Sb3
- 2.Sxb4#
- 1...Sd3
- 2.Sxd4#
- 1...Se6
- 2.Bxd7#
- 1...Bc7+!
- threat
- 1.cxb4?
- threat
- 2.Qxc5#
- 1...Bc7+
- 2.Rxc7#
- 1...Rxb4
- 2.Sxb4#
- 1...Qh5
- 2.Sxd4#
- 1...Bb6
- 2.Rxb6#
- 1...Be7
- 2.Rb6#
- 2.Rc7#
- 1...Sb3
- 2.b5#
- 1...Sd3
- 2.Sxd4#
- 1...Se6
- 2.Bxd7#
- 1...Qxc2!
- threat
- 1.cxd4?
- threat
- 2.Qxc5#
- 1...Bc7+
- 2.Rxc7#
- 1...Qxc2
- 2.d5#
- 1...Qxd4
- 2.Sxd4#
- 1...Bb6
- 2.Rxb6#
- 1...Be7
- 2.Rb6#
- 2.Rc7#
- 1...Sb3
- 2.Sxb4#
- 1...Sd3
- 2.d5#
- 1...Se6
- 2.Bxd7#
- 1...Qh5!
- threat
- 1.Se3?
- Keys
- 1.Sxd7!
- threat
- 2.Qxc5#
- 1...Bc7+
- 2.Rxc7#
- 1...Bxd7
- 2.Bxd7#
- 1...Qh5
- 2.Sxd4#
- 1...Bb6
- 2.Rxb6#
- 1...Be7
- 2.Rb6#
- 2.Rc7#
- 1...Sb3
- 2.Sxb4#
- 1...Sd3
- 2.Sxd4#
- 1...Se6
- 2.Sf8#
- threat
- 1.Sxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(c);N_GUARD::S(A),XP(f)
- R(a);N_GUARD::S(A),XP(e)
- B(d);N_GUARD::B(H),XP(i)
- B(k);N_GUARD::R1(F),XB(k)
- B(k);CHECK,N_GUARD::R1(F),XB(k)
- S(b);S_CUTR(a)::S(A),XP(e)
- S(b);S_CUTQ(c)::S(A),XP(f)
- S(j);S_CUTB(d)::B(H),XP(i)
- P(e);S_CUTR(a)::S(A)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- B(k);CHECK,N_GUARD::R1(F),XB(k)
- P(e);P_PINR(F),XP(C)::QAB1(D)
- P(f);XP(C)::QAB1(D)
- Q(c);::QAB1(D)
- B(d);::QAB1(D)
- B(k);N_GUARD::R1(F),XB(k)
- Refutation
- P(f);XS(A)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(k);CHECK,N_GUARD,P_PINB(H)::R1(F),XB(k)
- R(l);XB(H)::QAR1(D),XP(g)
- B(k);P_PINB(H),XP(E)::QAR1(D),XP(g)
- S(j);XS(I)::B(H),XP(i)
- B(k);N_GUARD,P_PINB(H)::R1(F),XB(k)
- Refutation
- B(d);XS(I)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- B(k);XP(E)::QAR1(D),XP(g)
- P(e);P_PINR(F),XP(C)::QAR1(D),XP(g)
- Q(c);N_GUARD::S(A),XP(f)
- B(k);N_GUARD::R1(F),XB(k)
- B(k);N_GUARD::R1(F)
- S(b);S_CUTR(a)::S(A),XP(e)
- S(b);S_CUTQ(c)::S(A),XP(f)
- S(j);S_CUTB(d)::B(H),XP(i)
- Refutation
- B(k);CHECK
- Try
- P(C);XP(e)
- Threat
- QAR1(D),XP(g)
- Vars
- B(k);CHECK,N_GUARD::R1(F),XB(k)
- R(a);P_PINR(F),XP(C)::S(A),XR(a)
- Q(c);N_GUARD::S(A),XP(f)
- B(k);N_GUARD::R1(F),XB(k)
- S(b);S_CUTR(a)::P(C)
- S(b);S_CUTQ(c)::S(A),XP(f)
- S(j);S_CUTB(d)::B(H),XP(i)
- Refutation
- Q(c);XS(A)
- Try
- P(C);XP(f)
- Threat
- QAR1(D),XP(g)
- Vars
- B(k);CHECK,N_GUARD::R1(F),XB(k)
- Q(c);N_GUARD,XS(A)::P(C)
- Q(c);XP(C)::S(A),XQ(c)
- B(k);N_GUARD::R1(F),XB(k)
- S(b);S_CUTR(a)::S(A),XP(e)
- S(b);S_CUTQ(c)::P(C)
- S(j);S_CUTB(d)::B(H),XP(i)
- Refutation
- Q(c);
- Try
- Actual
- S(I);XP(i)
- Threat
- QAR1(D),XP(g)
- Vars
- B(k);CHECK,N_GUARD,P_PINB(H)::R1(F),XB(k)
- B(d);OGATE,P_SPINB(d),XS(I)::B(H),XB(d)
- Q(c);N_GUARD::S(A),XP(f)
- B(k);N_GUARD,P_PINB(H)::R1(F),XB(k)
- S(b);S_CUTR(a)::S(A),XP(e)
- S(b);S_CUTQ(c)::S(A),XP(f)
- S(j);N_GUARD,S_CUTB(d)::B(H)+S(I)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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