MESON Chess Problem Database
Problem Display
PID: 60984 (n2B3Q/2q4n/4p3/5k1P/r2p1N2/1N4K1/8/3R1R1B w - - 0 1)
Ellerman, Arnoldo
4th Prize, Good Companions (May), 1919
#2
9 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4+
- 2.Rxf4#
- 1...Qa5
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qe5
- 2.Qxh7#
- 1...Qb6
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qxd8
- 2.Sh3#
- 1...Qc2
- 2.Se2#
- 1...Qc3+
- 2.Sd3#
- 1...Qc4
- 2.Se2#
- 2.Sd3#
- 1...Qc5
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qc6
- 2.Sd5#
- 1...Qa7
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qb7
- 2.Sd5#
- 1...Qd7
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qe7
- 2.Sh3#
- 1...Qf7
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Qg7+
- 2.Sg6#
- 1...Qc8
- 2.Se2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sg6#
- 1...Ra1
- 2.Sxd4#
- 1...Ra2
- 2.Sxd4#
- 1...Ra5
- 2.Sxd4#
- 1...Ra6
- 2.Sxd4#
- 1...Ra7
- 2.Sxd4#
- 1...Sg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qf6#
- 1...Qxf4+
- Tries
- 1.Bxc7?
- threat
- 2.Sh3#
- 2.Qe5#
- 1...Sxc7
- 2.Sh3#
- 1...d3
- 2.Qe5#
- 1...Ra2
- 2.Qe5#
- 1...Ra5
- 2.Sh3#
- 1...Sg5
- 2.Qe5#
- 1...Sf6
- 2.Sh3#
- 1...e5
- 2.Qxe5#
- 1...Kg5!
- threat
- 1.Rde1?
- threat
- 2.Be4#
- 1...Qxf4+
- 2.Rxf4#
- 1...Qc3+
- 2.Sd3#
- 1...Qg7+
- 2.Sg6#
- 1...Qxd8
- 2.Sh3#
- 2.Sxe6#
- 2.Re5#
- 2.Qe5#
- 1...Qe7
- 2.Sh3#
- 2.Sxe6#
- 2.Re5#
- 2.Qe5#
- 1...Sf6
- 2.Qxf6#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qxh7#
- 1...Qc2
- 2.Se2#
- 2.Re5#
- 2.Qe5#
- 2.Qxh7#
- 1...Qc6
- 2.Sd5#
- 2.Re5#
- 2.Qe5#
- 2.Qxh7#
- 1...Qb7
- 2.Sd5#
- 2.Re5#
- 2.Qe5#
- 1...Sg5
- 2.Qf6#
- 1...d3!
- threat
- 1.Qxh7+?
- 1...Qxh7
- 2.Sd3#
- 2.Sg6#
- 1...Ke5!
- 1...Qxh7
- 1.Qf8+?
- 1...Ke5
- 2.Sd3#
- 2.Sg6#
- 2.Rde1#
- 2.Rfe1#
- 1...Qf7
- 2.Sd3#
- 2.Sg6#
- 1...Sf6
- 2.Qxf6#
- 1...Sxf8!
- 1...Ke5
- 1.Bxc7?
- Keys
- 1.Rxd4!
- threat
- 2.Be4#
- 1...Qxf4+
- 2.Rfxf4#
- 1...Qc3+
- 2.Sd3#
- 1...Qg7+
- 2.Sg6#
- 1...Qxd8
- 2.Sh3#
- 1...Rxd4
- 2.Sxd4#
- 1...Qe7
- 2.Sh3#
- 1...Sf6
- 2.Qxf6#
- 1...Qe5
- 2.Qxh7#
- 1...Qc2
- 2.Se2#
- 1...Qc6
- 2.Sd5#
- 1...Qb7
- 2.Sd5#
- 1...Sg5
- 2.Qf6#
- threat
- 1.Rxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(F)::R1(B),XQ(e)
- Q(e);N_GUARD,SBLOCK::QAB(I),XS(f)
- Q(e);N_PINS(F),XB(H)::R(B)+S(F)
- Q(e);N_PINS(F)::R(B)+S(F)
- Q(e);CHECK,N_PINS(F)::R(B)+S(F)
- R(a);N_GUARD::S(D),XP(b)
- S(f);N_GUARD::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- Tries
- Try
- B(H);N_SPINS(F),XQ(e)
- Threat
- DUALS(2)
- Vars
- S(g);XB(H)::R(B)+S(F)
- P(b);::QAR1(I)
- R(a);::QAR1(I)
- R(a);::R(B)+S(F)
- S(f);SBLOCK::QAR1(I)
- S(f);::R(B)+S(F)
- P(d);::QAR1(I),XP(d)
- Refutation
- K(c);P-FLIGHT
- Try
- R(A);
- Threat
- B(C)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(F)::R1(B),XQ(e)
- Q(e);CHECK,N_PINS(F)::R(B)+S(F)
- S(f);N_GUARD::QAR1(I),XS(f)
- S(f);N_GUARD::QAR1(I)
- Refutation
- P(b);
- Try
- Q(I);CHECK,XS(f)
- Refutation
- K(c);N_PINS(F),P-FLIGHT
- Try
- Q(I);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR1(I),XS(f)
- Refutation
- S(f);XQ(I)
- Try
- Actual
- R(A);XP(b)
- Threat
- B(C)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(F)::R1(B),XQ(e)
- Q(e);CHECK,N_PINS(F)::R(B)+S(F)
- Q(e);N_PINS(F),XB(H)::R(B)+S(F)
- R(a);XR(A)::S(D),XR(a)
- Q(e);N_PINS(F)::R(B)+S(F)
- S(f);N_GUARD::QAR1(I),XS(f)
- Q(e);N_GUARD,SBLOCK::QAB(I),XS(f)
- S(f);N_GUARD::QAR1(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).