MESON Chess Problem Database
Problem Display
PID: 50738 (r3k1n1/P1Q5/3P1R2/8/8/3r1b2/1p3R1K/1B6 w q - 0 1)
Hume, George
Chess Amateur (The), 1923
#2
7 + 6
| 273 | Mat Plus | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Bg6#
- 1...Rd2
- 2.Bg6#
- 1...Ra3
- 2.Bg6#
- 1...Rb3
- 2.Bg6#
- 1...Rc3
- 2.Bg6#
- 1...Re3
- 2.Bg6#
- 1...Rd4
- 2.Bg6#
- 1...Rd5
- 2.Bg6#
- 1...Rxd6
- 2.Bg6#
- 1...Rxa7
- 2.Qc8#
- 1...Rb8
- 2.axb8Q#
- 2.axb8R#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qf7#
- 1...Bd1
- 2.Rf8#
- 1...Bh1
- 2.Rf8#
- 1...Be2
- 2.Rf8#
- 1...Bg2
- 2.Rf8#
- 1...Be4
- 2.Rf8#
- 1...Bg4
- 2.Rf8#
- 1...Bd5
- 2.Rf8#
- 1...Bh5
- 2.Rf8#
- 1...Bc6
- 2.Rf8#
- 1...Bb7
- 2.Rf8#
- 1...Sxf6
- 2.Qe7#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rd1
- Tries
- 1.Kg1?
- 1...Rxd6
- 2.Bg6#
- 1...Rxa7
- 2.Qc8#
- 1...Sxf6
- 2.Qe7#
- 1...Rd2
- 2.Bg6#
- 1...Ra3
- 2.Bg6#
- 1...Rb3
- 2.Bg6#
- 1...Rc3
- 2.Bg6#
- 1...Re3
- 2.Bg6#
- 1...Rd4
- 2.Bg6#
- 1...Rd5
- 2.Bg6#
- 1...Rb8
- 2.axb8Q#
- 2.axb8R#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qf7#
- 1...Bd1
- 2.Rf8#
- 1...Bh1
- 2.Rf8#
- 1...Be2
- 2.Rf8#
- 1...Bg2
- 2.Rf8#
- 1...Be4
- 2.Rf8#
- 1...Bg4
- 2.Rf8#
- 1...Bd5
- 2.Rf8#
- 1...Bh5
- 2.Rf8#
- 1...Bc6
- 2.Rf8#
- 1...Bb7
- 2.Rf8#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rd1+!
- 1...Rxd6
- 1.Rf1?
- 1...Rxd6
- 2.Bg6#
- 1...Rxa7
- 2.Qc8#
- 1...Sxf6
- 2.Qe7#
- 1...Rd1
- 2.Bg6#
- 1...Ra3
- 2.Bg6#
- 1...Rb3
- 2.Bg6#
- 1...Rc3
- 2.Bg6#
- 1...Re3
- 2.Bg6#
- 1...Rd4
- 2.Bg6#
- 1...Rd5
- 2.Bg6#
- 1...Rb8
- 2.axb8Q#
- 2.axb8R#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qf7#
- 1...Bd1
- 2.Rf8#
- 1...Bh1
- 2.Rf8#
- 1...Be2
- 2.Rf8#
- 1...Bg2
- 2.Rf8#
- 1...Be4
- 2.Rf8#
- 1...Bg4
- 2.Rf8#
- 1...Bd5
- 2.Rf8#
- 1...Bh5
- 2.Rf8#
- 1...Bc6
- 2.Rf8#
- 1...Bb7
- 2.Rf8#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rd2+!
- 1...Rxd6
- 1.R2xf3?
- threat
- 2.Rf8#
- 1...Rxf3
- 2.Bg6#
- 1...Sxf6
- 2.Qe7#
- 1...Rd2+!
- threat
- 1.R6xf3?
- threat
- 2.Rf8#
- 1...Sf6
- 2.Qe7#
- 1...Rxf3!
- threat
- 1.Rf4?
- 1...Rxa7
- 2.Qc8#
- 1...Sf6
- 2.Qe7#
- 1...Rd1
- 2.Bg6#
- 1...Rd2
- 2.Bg6#
- 1...Ra3
- 2.Bg6#
- 1...Rb3
- 2.Bg6#
- 1...Rc3
- 2.Bg6#
- 1...Re3
- 2.Bg6#
- 1...Rd4
- 2.Bg6#
- 1...Rd5
- 2.Bg6#
- 1...Rb8
- 2.axb8Q#
- 2.axb8R#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qf7#
- 1...Bd1
- 2.Rf8#
- 1...Bh1
- 2.Rf8#
- 1...Be2
- 2.Rf8#
- 1...Bg2
- 2.Rf8#
- 1...Be4
- 2.Rf8#
- 1...Bg4
- 2.Rf8#
- 1...Bd5
- 2.Rf8#
- 1...Bh5
- 2.Rf8#
- 1...Bc6
- 2.Rf8#
- 1...Bb7
- 2.Rf8#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6!
- 1...Rxa7
- 1.Re6+?
- 1...Se7
- 2.Qxe7#
- 1...Kf8!
- 1...Se7
- 1.Qc6+?
- 1...Kd8
- 2.Rf8#
- 1...Bxc6!
- 1...Kd8
- 1.d7+?
- 1...Ke7
- 2.d8Q#
- 1...Rxd7!
- 1...Ke7
- 1.Kg1?
- Keys
- 1.Qg7!
- threat
- 2.Rf8#
- 1...Kd8
- 2.Rf8#
- 1...0-0-0
- 2.Qc7#
- 1...Sxf6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 23
- Sets
- R(b);OGATE::B(A)
- R(b);OGATE,P_PINR(B)::B(A)
- R(b);OGATE,XP(D)::B(A)
- R(d);N_GUARD,XP(F)::QAR2(G)
- R(d);OGATE::PXR(d)=Q
- R(d);N_GUARD::QAR2(G),XR(d)
- R(d);SBLOCK::QAB1(G)
- B(c);::R1(E)
- S(f);N_GUARD,XR(E)::QAR1(G)
- S(f);N_GUARD::QAR1(G)
- S(f);N_GUARD::QAR1(G),XS(f)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- R(b);OGATE,XP(D)::B(A)
- R(d);N_GUARD,XP(F)::QAR2(G)
- S(f);N_GUARD,XR(E)::QAR1(G)
- R(b);OGATE::B(A)
- R(d);OGATE::PXR(d)=Q
- R(d);N_GUARD::QAR2(G),XR(d)
- R(d);SBLOCK::QAB1(G)
- B(c);::R1(E)
- S(f);N_GUARD::QAR1(G)
- S(f);N_GUARD::QAR1(G),XS(f)
- Refutation
- R(b);CHECK
- Try
- R(B);
- Vars
- R(b);OGATE,XP(D)::B(A)
- R(d);N_GUARD,XP(F)::QAR2(G)
- S(f);N_GUARD,XR(E)::QAR1(G)
- R(b);OGATE::B(A)
- R(d);OGATE::PXR(d)=Q
- R(d);N_GUARD::QAR2(G),XR(d)
- R(d);SBLOCK::QAB1(G)
- B(c);::R1(E)
- S(f);N_GUARD::QAR1(G)
- S(f);N_GUARD::QAR1(G),XS(f)
- Refutation
- R(b);CHECK
- Try
- R(B);XB(c)
- Threat
- R1(E)
- Vars
- R(b);OGATE,XR(B)::B(A)
- S(f);N_GUARD,XR(E)::QAR1(G)
- Refutation
- R(b);CHECK
- Try
- R(E);XB(c)
- Threat
- R1(E)
- Vars
- S(f);N_GUARD::QAR1(G)
- Refutation
- R(b);XR(E)
- Try
- R(E);
- Vars
- R(d);N_GUARD,XP(F)::QAR2(G)
- S(f);N_GUARD::QAR1(G)
- R(b);OGATE::B(A)
- R(b);OGATE,P_PINR(B)::B(A)
- R(d);OGATE::PXR(d)=Q
- R(d);N_GUARD::QAR2(G),XR(d)
- R(d);SBLOCK::QAB1(G)
- B(c);::R1(E)
- S(f);N_GUARD::QAR1(G),XS(f)
- Refutation
- R(b);XP(D)
- Try
- R(E);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR1(G),XS(f)
- Refutation
- K(e);P-FLIGHT,P_SPINB(c)
- Try
- Q(G);CHECK
- Vars
- K(e);P-FLIGHT::R(E)
- Refutation
- B(c);XQ(G)
- Try
- P(D);CHECK
- Vars
- K(e);P-FLIGHT::P=Q
- Refutation
- R(b);XP(D)
- Try
- Actual
- Q(G);
- Threat
- R1(E)
- Vars
- K(e);P-FLIGHT::R(E)
- K(e);0-0-0,OGATEB::QAR1(G)
- S(f);N_GUARD,XR(E)::QAR1(G)
- S(f);N_GUARD::QAR1(G),XS(f)
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).