MESON Chess Problem Database
Problem Display
PID: 138840 (2B4N/3Rp2N/R1nbk3/8/5np1/3P2B1/1Q6/K7 w - - 0 1)
Stubbs, Arthur Goodwin
Good Companions (February), 1923
#2
9 + 6
| 3391 | Het Half Pin Thema | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Rd8#
- 1...Bb4
- 2.Rd8#
- 1...Bc5
- 2.Rd8#
- 1...Be5
- 2.Rd4#
- 2.Rd8#
- 1...Bc7
- 2.Rd8#
- 1...Bb8
- 2.Rd8#
- 1...Se2
- 2.Rxd6#
- 1...Sg2
- 2.Rxd6#
- 1...Sxd3
- 2.Rxd6#
- 1...Sh3
- 2.Rxd6#
- 1...Sd5
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sh5
- 2.Rxd6#
- 1...Sg6
- 2.Rxd6#
- 1...Sb4
- 2.Rdxd6#
- 1...Sa5
- 2.Rdxd6#
- 1...Se5
- 2.Rdxd6#
- 1...Sa7
- 2.Rdxd6#
- 1...Sb8
- 2.Rdxd6#
- 1...Sd8
- 2.Rdxd6#
- 1...Ba3
- Tries
- 1.Qd4?
- threat
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Kf5
- 2.Qe4#
- 1...Ba3
- 2.Rd5#
- 2.Rd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 2.Qe4#
- 1...Bb4
- 2.Rd5#
- 2.Rd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 2.Qe4#
- 1...Bc5
- 2.Rd5#
- 2.Rd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 2.Qe4#
- 1...Be5
- 2.Rd5#
- 2.Rd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Bc7
- 2.Rd5#
- 2.Rd6#
- 2.Rxc7#
- 2.Rd8#
- 1...Bb8
- 2.Rd5#
- 2.Rd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Se5
- 2.Rdxd6#
- 1...Sa7
- 2.Rdxd6#
- 2.Rdxa7#
- 2.Qe4#
- 1...Sb8
- 2.Rdxd6#
- 2.Qe4#
- 1...Sd8
- 2.Rdxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rxd8#
- 2.Qe4#
- 1...Sxd4!
- threat
- 1.Qe5+?
- 1...Bxe5+
- 2.Rd4#
- 1...Sxe5
- 2.Rdxd6#
- 1...Kxe5!
- 1...Bxe5+
- 1.Qe2+?
- 1...Kf5
- 2.Qe4#
- 1...Be5+
- 2.Rd4#
- 1...Sxe2
- 2.Rxd6#
- 1...Se5
- 2.Rdxd6#
- 1...Kd5!
- 1...Kf5
- 1.Qb5?
- threat
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Be5+
- 2.Rd4#
- 1...Se5
- 2.Rdxd6#
- 1...Ba3
- 2.Rd4#
- 2.Rd5#
- 2.Rd8#
- 1...Bb4
- 2.Rd4#
- 2.Rd5#
- 2.Rd8#
- 1...Bc7
- 2.Rd4#
- 2.Rd5#
- 2.Rd8#
- 1...Bb8
- 2.Rd4#
- 2.Rd5#
- 2.Rd8#
- 1...Sa7
- 2.Rdxd6#
- 2.Rdxa7#
- 1...Sb8
- 2.Rdxd6#
- 1...Sd8
- 2.Rdxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rxd8#
- 1...Bc5!
- threat
- 1.Qd4?
- Keys
- 1.Qg2!
- 1...Be5+
- 2.Rd4#
- 1...Ke5
- 2.Qe4#
- 1...Kf5
- 2.Qe4#
- 1...Sxg2
- 2.Rxd6#
- 1...Sxd3
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Ba3
- 2.Rd5#
- 2.Qe4#
- 1...Bb4
- 2.Rd5#
- 2.Qe4#
- 1...Bc5
- 2.Rd5#
- 2.Qe4#
- 1...Bc7
- 2.Rd5#
- 1...Bb8
- 2.Rd5#
- 1...Se2
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sh3
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sd5
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sh5
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sg6
- 2.Rxd6#
- 2.Rda7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sb4
- 2.Qe4#
- 1...Sd4
- 2.Qe4#
- 1...Sa5
- 2.Qe4#
- 1...Se5
- 2.Rdxd6#
- 1...Sa7
- 2.Qe4#
- 1...Sb8
- 2.Qe4#
- 1...Sd8
- 2.Qe4#
- 1...Be5+
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- B(d);P_SPINS(c)::B(H)+R(F)
- S(a);::B(H)+R(F),DCHECK,XB(d)
- S(a);XP(C)::B(H)+R(F),DCHECK,XB(d)
- S(c);P_SPINB(d)::B(H)+R(F),DCHECK,XB(d)
- Tries
- Try
- Q(B);
- Threat
- DUALS(5)
- Vars
- K(e);S_FLIGHT::QAB1(B)
- S(c);P_SPINB(d)::B(H)+R(F),DCHECK,XB(d)
- Refutation
- S(c);P_SPINB(d),XQ(B)
- Try
- Q(B);CHECK
- Vars
- B(d);CHECK,OGATE,P_SPINS(c),SBLOCK,XQ(B)::B(H)+R(F)
- S(c);P_SPINB(d),SBLOCK,XQ(B)::B(H)+R(F),DCHECK,XB(d)
- Refutation
- K(e);P-FLIGHT,P_SPINS(a),XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(e);S_FLIGHT::QAB1(B)
- B(d);CHECK,OGATE,P_SPINB(d),P_SPINS(c)::B(H)+R(F)
- S(a);XQ(B)::B(H)+R(F),DCHECK,XB(d)
- S(c);P_SPINB(d),P_SPINS(c)::B(H)+R(F),DCHECK,XB(d)
- Refutation
- K(e);P_SPINB(d),S_FLIGHT
- Try
- Q(B);
- Threat
- DUALS(4)
- Vars
- B(d);CHECK,OGATE,P_SPINS(c)::B(H)+R(F)
- S(c);P_SPINB(d)::B(H)+R(F),DCHECK,XB(d)
- Refutation
- B(d);P_SPINS(c)
- Try
- Actual
- Q(B);
- Vars
- B(d);CHECK,OGATE,P_SPINS(c),SBLOCK::B(H)+R(F)
- K(e);P-FLIGHT,P_SPINS(a)::QAR1(B)
- K(e);S_FLIGHT::QAB1(B)
- S(a);XQ(B)::B(H)+R(F),DCHECK,XB(d)
- B(d);OGATE,P_SPINS(c)::B(H)+R(F)
- S(c);N_GUARD,P_SPINB(d)::QAR2(B)
- S(c);P_SPINB(d),SBLOCK::B(H)+R(F),DCHECK,XB(d)
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).