MESON Chess Problem Database
Problem Display
PID: 21704 (B4R2/6K1/5N2/7Q/R1bq1k2/8/N2P3P/8 w - - 0 1)
Owen, HL
1st Prize, Good Companions (October Meredith Ty.), 1920
#2
9 + 3
| 3132 | The Good Companion Two-Mover | 1922 |
| 3391 | Het Half Pin Thema | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Qg1+
- 2.Sg4#
- 1...Qf2
- 2.Sg4#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qe3
- 2.Sg4#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qe5
- 2.Qg4#
- 1...Qxf6+
- 2.Rxf6#
- 1...Qa7+
- 2.Sd7#
- 1...Qxd2
- 2.Sg4#
- 1...Qe4
- 2.Sd5#
- 1...Qd7+
- 2.Sxd7#
- 1...Bf1
- 2.Rxd4#
- 1...Bxa2
- 2.Rxd4#
- 1...Be2
- 2.Rxd4#
- 1...Bb3
- 2.Rxd4#
- 1...Bb5
- 2.Rxd4#
- 1...Ba6
- 2.Rxd4#
- 1...Be6
- 2.Rxd4#
- 1...Bf7
- 2.Rxd4#
- 1...Bg8
- 2.Rxd4#
- 1...Qg1+
- Tries
- 1.Sc3?
- 1...Qg1+
- 2.Sg4#
- 1...Qxf6+
- 2.Rxf6#
- 1...Qa7+
- 2.Sd7#
- 1...Qd7+
- 2.Sxd7#
- 1...Qxd2
- 2.Sg4#
- 2.Sfd5#
- 1...Qf2
- 2.Scd5#
- 2.Sg4#
- 2.Sfd5#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qe3
- 2.Scd5#
- 2.Sg4#
- 2.Sfd5#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qc5
- 2.Se2#
- 2.Sfd5#
- 1...Qe5
- 2.Qg4#
- 1...Qb6
- 2.Se2#
- 2.Scd5#
- 2.Sfd5#
- 1...Qd3
- 2.Sfd5#
- 1...Qe4
- 2.Sfd5#
- 1...Qd5
- 2.Se2#
- 2.Scxd5#
- 2.Sfxd5#
- 1...Qd6
- 2.Se2#
- 2.Sfd5#
- 1...Qd8
- 2.Se2#
- 2.Sfd5#
- 1...Bf1
- 2.Sd5#
- 2.Rxd4#
- 1...Ba2
- 2.Se2#
- 2.Rxd4#
- 1...Be2
- 2.Sxe2#
- 2.Sd5#
- 2.Rxd4#
- 1...Bb3
- 2.Se2#
- 2.Rxd4#
- 1...Bd3
- 2.Sd5#
- 1...Bb5
- 2.Sd5#
- 2.Rxd4#
- 1...Bd5
- 2.Se2#
- 2.Sxd5#
- 1...Ba6
- 2.Sd5#
- 2.Rxd4#
- 1...Be6
- 2.Se2#
- 2.Rxd4#
- 1...Bf7
- 2.Se2#
- 2.Rxd4#
- 1...Bg8
- 2.Se2#
- 2.Rxd4#
- 1...Qxc3!
- 1...Qg1+
- 1.Rxc4?
- threat
- 2.Rxd4#
- 1...Qe4
- 2.Sxe4#
- 2.Sg4#
- 2.Sd5#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 2.Rxe4#
- 1...Qxc4!
- threat
- 1.Sc3?
- Keys
- 1.Sc1!
- 1...Qg1+
- 2.Sg4#
- 1...Qxf6+
- 2.Rxf6#
- 1...Qa7+
- 2.Sd7#
- 1...Qd7+
- 2.Sxd7#
- 1...Qxd2
- 2.Sg4#
- 1...Qa1
- 2.Se2#
- 2.Sd3#
- 1...Qb2
- 2.Se2#
- 2.Sd3#
- 1...Qf2
- 2.Sd3#
- 2.Sg4#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qc3
- 2.Se2#
- 1...Qe3
- 2.Sg4#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 2.Sg8#
- 1...Qc5
- 2.Se2#
- 2.Sd3#
- 1...Qe5
- 2.Sd3#
- 2.Qg4#
- 1...Qb6
- 2.Se2#
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qe4
- 2.Sd5#
- 1...Qd5
- 2.Se2#
- 1...Qd6
- 2.Se2#
- 1...Qd8
- 2.Se2#
- 1...Bf1
- 2.Rxd4#
- 1...Ba2
- 2.Se2#
- 2.Sd3#
- 2.Rxd4#
- 1...Be2
- 2.Sxe2#
- 2.Rxd4#
- 1...Bb3
- 2.Se2#
- 2.Sd3#
- 2.Rxd4#
- 1...Bd3
- 2.Sxd3#
- 1...Bb5
- 2.Rxd4#
- 1...Bd5
- 2.Se2#
- 2.Sd3#
- 1...Ba6
- 2.Rxd4#
- 1...Be6
- 2.Se2#
- 2.Sd3#
- 2.Rxd4#
- 1...Bf7
- 2.Se2#
- 2.Sd3#
- 2.Rxd4#
- 1...Bg8
- 2.Se2#
- 2.Sd3#
- 2.Rxd4#
- 1...Qg1+
- 1.Sc1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F)
- Q(b);P_SPINB(a),SBLOCK::QAR1(E)
- Q(b);CHECK,OGATE,P_SPINB(a),P_SPINQ(b),XS(F)::R(I),XQ(b)
- Q(b);N_PINS(F),P_SPINB(a),XP(B)::R(I)+S(F)
- Q(b);N_PINS(F),SBLOCK::R(I)+S(F),DCHECK
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F),XQ(b)
- B(a);OGATE,P_SPINQ(b)::R(D),XQ(b)
- B(a);OGATE,P_SPINQ(b),XS(A)::R(D),XQ(b)
- Tries
- Try
- S(A);
- Vars
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F)
- Q(b);CHECK,OGATE,P_SPINB(a),P_SPINQ(b),XS(F)::R(I),XQ(b)
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F),XQ(b)
- Q(b);P_SPINB(a),SBLOCK::QAR1(E)
- Q(b);N_PINS(F),P_SPINB(a)::R(I)+S(F),DCHECK
- Q(b);N_PINS(F)::R(I)+S(F),DCHECK
- B(a);N_GUARD,P_SPINQ(b)::S(A)
- Refutation
- Q(b);P_SPINB(a),XS(A)
- Try
- R(D);P_PINQ(b),XB(a)
- Threat
- R(D),XQ(b)
- Refutation
- Q(b);N_PINS(F),N_SPINQ(b),XR(D)
- Try
- Actual
- S(A);
- Vars
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F)
- Q(b);CHECK,OGATE,P_SPINB(a),P_SPINQ(b),XS(F)::R(I),XQ(b)
- Q(b);CHECK,N_PINS(F),P_SPINB(a)::R(I)+S(F),XQ(b)
- Q(b);N_PINS(F),P_SPINB(a),XP(B)::R(I)+S(F)
- Q(b);P_SPINB(a)::S(A)
- Q(b);N_GUARD,N_PINS(F),P_SPINB(a)::S(A),XQ(b)
- Q(b);N_PINS(F),SBLOCK::R(I)+S(F),DCHECK
- Q(b);N_PINS(F),P_SPINB(a)::S(A)
- B(a);OGATE,P_SPINQ(b)::R(D),XQ(b)
- B(a);N_GUARD,P_SPINQ(b)::S(A),XB(a)
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).