MESON Chess Problem Database
Problem Display
PID: 83584 (5BQ1/8/2N1RP2/3knbR1/8/8/1N6/KB6 w - - 0 1)
Ellerman, Arnoldo
Good Companions, 1922
#2
9 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxb1
- 2.Rgxe5#
- 1...Bc2
- 2.Rgxe5#
- 1...Bd3
- 2.Rgxe5#
- 1...Bh3
- 2.Rgxe5#
- 1...Be4
- 2.Ba2#
- 2.Rgxe5#
- 1...Bg4
- 2.Rgxe5#
- 1...Bg6
- 2.Rgxe5#
- 1...Bh7
- 2.Rgxe5#
- 1...Sd3
- 2.Ba2#
- 1...Sf3
- 2.Ba2#
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Ba2#
- 2.Be4#
- 1...Sxc6
- 2.Re4#
- 1...Sg6
- 2.Ba2#
- 2.Be4#
- 1...Sd7
- 2.Ba2#
- 2.Be4#
- 1...Sf7
- 2.Ba2#
- 1...Bxb1
- Tries
- 1.Ba2+?
- 1...Sc4
- 2.Bxc4#
- 2.Rxf5#
- 1...Ke4!
- 1...Sc4
- 1.Bc2?
- 1...Bxc2
- 2.Rgxe5#
- 1...Sxc6
- 2.Re4#
- 1...Bd3
- 2.Rgxe5#
- 1...Sf7
- 2.Bb3#
- 1...Bh3
- 2.Rgxe5#
- 1...Be4
- 2.Bb3#
- 2.Rgxe5#
- 1...Bg4
- 2.Rgxe5#
- 1...Bg6
- 2.Rgxe5#
- 1...Bh7
- 2.Rgxe5#
- 1...Sd3
- 2.Bb3#
- 1...Sf3
- 2.Bb3#
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Bb3#
- 2.Be4#
- 1...Sg6
- 2.Bb3#
- 2.Be4#
- 1...Sd7
- 2.Bb3#
- 2.Be4#
- 1...Bxe6!
- 1...Bxc2
- 1.Be4+?
- 1...Bxe4
- 2.Rgxe5#
- 1...Kxe4!
- 1...Bxe4
- 1.Bxf5?
- 1...Sxc6
- 2.Re4#
- 1...Sd3
- 2.Bxd3#
- 2.Be4#
- 1...Sf3
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Be4#
- 2.Bxg4#
- 1...Sg6
- 2.Be4#
- 2.Bxg6#
- 1...Sd7
- 2.Be4#
- 1...Sf7!
- 1...Sxc6
- 1.Ba3?
- threat
- 2.Rd6#
- 1...Bxb1
- 2.Rgxe5#
- 1...Sxc6
- 2.Re4#
- 1...Bc2
- 2.Rgxe5#
- 1...Bd3
- 2.Rgxe5#
- 1...Sd3
- 2.Ba2#
- 1...Bxe6!
- threat
- 1.Bb4?
- threat
- 2.Rd6#
- 1...Bxb1
- 2.Rgxe5#
- 1...Sxc6
- 2.Re4#
- 1...Bc2
- 2.Rgxe5#
- 1...Bd3
- 2.Rgxe5#
- 1...Sd3
- 2.Ba2#
- 1...Bxe6!
- threat
- 1.Be7?
- 1...Bxb1
- 2.Rgxe5#
- 1...Sxc6
- 2.Re4#
- 1...Bc2
- 2.Rgxe5#
- 1...Bd3
- 2.Rgxe5#
- 1...Sf7
- 2.Ba2#
- 1...Bh3
- 2.Rgxe5#
- 1...Be4
- 2.Ba2#
- 2.Rgxe5#
- 1...Bg4
- 2.Rgxe5#
- 1...Bg6
- 2.Rgxe5#
- 1...Bh7
- 2.Rgxe5#
- 1...Sd3
- 2.Ba2#
- 1...Sf3
- 2.Ba2#
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Ba2#
- 2.Be4#
- 1...Sg6
- 2.Ba2#
- 2.Be4#
- 1...Sd7
- 2.Ba2#
- 2.Be4#
- 1...Bxe6!
- 1...Bxb1
- 1.Rg4?
- threat
- 2.Sb4#
- 2.Rd4#
- 1...Bxe6
- 2.Sb4#
- 2.Be4#
- 1...Sxg4
- 2.Ba2#
- 1...Sxc6
- 2.Ba2#
- 1...Sf7
- 2.Ba2#
- 1...Be4
- 2.Bxe4#
- 1...Sd3
- 2.Ba2#
- 2.Rd4#
- 1...Sf3
- 2.Sb4#
- 2.Ba2#
- 1...Bxg4!
- threat
- 1.Re8+?
- 1...Be6
- 2.Qxe6#
- 1...Sf7
- 2.Be4#
- 1...Kxc6!
- 1...Be6
- 1.Qf7?
- 1...Bxb1
- 2.Rgxe5#
- 1...Sxc6
- 2.Re4#
- 2.Qd7#
- 1...Sxf7
- 2.Ba2#
- 1...Bc2
- 2.Rgxe5#
- 1...Bd3
- 2.Rgxe5#
- 1...Bh3
- 2.Rgxe5#
- 2.Qd7#
- 1...Be4
- 2.Ba2#
- 2.Rgxe5#
- 2.Qd7#
- 1...Bg4
- 2.Rgxe5#
- 2.Qd7#
- 1...Bg6
- 2.Rgxe5#
- 2.Qd7#
- 1...Bh7
- 2.Rgxe5#
- 2.Qd7#
- 1...Sd3
- 2.Ba2#
- 2.Qd7#
- 1...Sf3
- 2.Ba2#
- 2.Be4#
- 2.Qd7#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Ba2#
- 2.Be4#
- 2.Qd7#
- 1...Sg6
- 2.Ba2#
- 2.Be4#
- 2.Qd7#
- 1...Sd7
- 2.Ba2#
- 2.Be4#
- 2.Qxd7#
- 1...Bxe6!
- 1...Bxb1
- 1.Ba2+?
- Keys
- 1.Rh5!
- 1...Bxb1
- 2.Rhxe5#
- 1...Bxe6
- 2.Qg2#
- 1...Sxc6
- 2.Re4#
- 1...Bc2
- 2.Rhxe5#
- 1...Bd3
- 2.Rhxe5#
- 1...Sf7
- 2.Ba2#
- 1...Bh3
- 2.Rhxe5#
- 1...Be4
- 2.Ba2#
- 2.Rhxe5#
- 1...Bg4
- 2.Rhxe5#
- 1...Bg6
- 2.Rhxe5#
- 1...Bh7
- 2.Rhxe5#
- 1...Sd3
- 2.Ba2#
- 1...Sf3
- 2.Ba2#
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Ba2#
- 2.Be4#
- 1...Sg6
- 2.Ba2#
- 2.Be4#
- 1...Sd7
- 2.Ba2#
- 2.Be4#
- 1...Bxb1
- 1.Rh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- S(b);P_SPINB(c)::B(B)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- Tries
- Try
- B(B);CHECK
- Refutation
- K(a);P_SPINS(b),S_FLIGHT
- Try
- B(B);
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- S(b);P_SPINB(c)::B(B)
- Refutation
- B(c);P_SPINB(c),P_SPINS(b),XR(F)
- Try
- B(B);CHECK
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- Refutation
- K(a);P_SPINS(b),S_FLIGHT,XB(B)
- Try
- B(B);XB(c)
- Vars
- S(b);OGATE,SBLOCK,XS(E)::QAB(I)+R(F)
- S(b);::R(D)+B(B),DCHECK
- Refutation
- S(b);
- Try
- B(H);
- Threat
- QAB(I)+R(F),DCHECK
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- Refutation
- B(c);P_SPINB(c),P_SPINS(b),XR(F)
- Try
- B(H);
- Threat
- QAB(I)+R(F),DCHECK
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- Refutation
- B(c);P_SPINB(c),P_SPINS(b),XR(F)
- Try
- B(H);
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- S(b);P_SPINB(c)::B(B)
- Refutation
- B(c);P_SPINB(c),P_SPINS(b),XR(F)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XR(D)::B(B)
- S(b);N_GUARD,XS(E)::B(B)
- S(b);N_GUARD::B(B)
- B(c);N_GUARD::B(B),XB(c)
- Refutation
- B(c);XR(D)
- Try
- R(F);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c),P_SPINS(b)::QAB1(I),XB(c)
- S(b);P_SPINB(c),P_SPINS(b)::B(B)
- Refutation
- K(a);S_FLIGHT,XS(E)
- Try
- Q(I);
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c),XQ(I)::B(B)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);P_SPINB(c)::B(B)
- Refutation
- B(c);P_SPINB(c),P_SPINS(b),XR(F)
- Try
- Actual
- R(D);
- Vars
- B(c);OGATE,P_SPINS(b),XB(B)::R1(D),XS(b)
- B(c);N_GUARD,P_SPINB(c),P_SPINS(b),SBLOCK,XR(F)::QAB(I)
- S(b);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(I)+R(F)
- B(c);OGATE,P_SPINS(b)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINB(c)::B(B)
- S(b);P_SPINB(c)::B(B)
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).