MESON Chess Problem Database
Problem Display
PID: 101248 (2K5/5Q2/p3B1p1/2pqb1r1/2k3bR/P1NR4/2PP4/8 w - - 0 1)
Stubbs, Arthur Goodwin
1st HM., Good Companions (May), 1917
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxe6+
- 2.Qxe6#
- 1...Rf5
- 2.Bxd5#
- 1...Bf4
- 2.Qxf4#
- 1...Qxe6+
- Tries
- 1.Rxd5?
- threat
- 2.Rd3#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qf1#
- 1...Bxc3
- 2.Qf1#
- 1...Rf5
- 2.Rd3#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bh2
- 2.Qf1#
- 1...Bg3
- 2.Qf1#
- 1...Bd4
- 2.Rf5#
- 1...Bf4
- 2.Qxf4#
- 1...Bd6
- 2.Qf1#
- 1...Bc7
- 2.Qf1#
- 1...Bg7
- 2.Qf1#
- 1...Bb8
- 2.Qf1#
- 1...Bh8
- 2.Qf1#
- 1...Bf6!
- threat
- 1.Rxg4+?
- 1...Rxg4
- 2.Bxd5#
- 1...Bf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Bd4!
- 1...Rxg4
- 1.Qe8?
- threat
- 2.Qa4#
- 1...Qxe6+
- 2.Qxe6#
- 1...Bxc3!
- threat
- 1.Qf5?
- threat
- 2.Bxd5#
- 1...Qxe6+
- 2.Qxe6#
- 1...Bxc3!
- threat
- 1.Qa7?
- threat
- 2.Qxa6#
- 1...a5
- 2.Qa6#
- 1...Qxe6+!
- threat
- 1.Qb7?
- threat
- 2.Qxd5#
- 2.Qxa6#
- 2.Qb3#
- 1...Bxc3
- 2.Qxa6#
- 2.Qb3#
- 1...Bd4
- 2.Qxa6#
- 2.Qb3#
- 1...Bh2
- 2.Qxa6#
- 2.Qb3#
- 1...Bg3
- 2.Qxa6#
- 2.Qb3#
- 1...Bf4
- 2.Qxa6#
- 2.Qb3#
- 1...Bd6
- 2.Qxa6#
- 2.Qb3#
- 1...Bf6
- 2.Qxa6#
- 2.Qb3#
- 1...Bc7
- 2.Qxa6#
- 2.Qb3#
- 1...Bg7
- 2.Qxa6#
- 2.Qb3#
- 1...Bb8
- 2.Qxa6#
- 2.Qb3#
- 1...Bh8
- 2.Qxa6#
- 2.Qb3#
- 1...a5
- 2.Qxd5#
- 2.Qa6#
- 2.Qb3#
- 2.Qb5#
- 1...Qxe6+!
- threat
- 1.Qd7?
- threat
- 2.Bxd5#
- 2.Qa4#
- 2.Qxd5#
- 1...Qxe6
- 2.Qxe6#
- 1...Bd4
- 2.Qa4#
- 1...Bh2
- 2.Qa4#
- 1...Bg3
- 2.Qa4#
- 1...Bf4
- 2.Qa4#
- 1...Bd6
- 2.Qa4#
- 1...Bf6
- 2.Qa4#
- 1...Bc7
- 2.Qa4#
- 1...Bg7
- 2.Qa4#
- 1...Bb8
- 2.Qa4#
- 1...Bh8
- 2.Qa4#
- 1...Bxc3!
- threat
- 1.Rxd5?
- Keys
- 1.Qf1!
- threat
- 2.Rxd5#
- 1...Qxe6+
- 2.Rd7#
- 1...Rf5
- 2.Bxd5#
- 1...Bd4
- 2.Rf3#
- 1...Bf4
- 2.Qxf4#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(d);CHECK,OGATE,XB(G)::QAB(H),XQ(d)
- R(f);N_PINB(G)::B(G),XQ(d)
- B(e);N_GUARD,N_SPINB(b)::QAR(H),XB(e)
- Tries
- Try
- R(E);XQ(d)
- Threat
- DUALS(5)
- Vars
- B(e);XS(D)::QAB(H)
- B(e);::QAB(H)
- B(e);N_SPINB(b),OGATE,SBLOCK::B(G)+R(E)
- B(e);N_GUARD,N_SPINB(b)::QAR(H),XB(e)
- Refutation
- B(e);
- Try
- R(F);CHECK,N_SPINB(G),XB(b)
- Vars
- R(f);XR(F)::B(G),XQ(d)
- Refutation
- B(e);P_SPINB(e)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- Q(d);CHECK,N_SPINQ(d),OGATE,XB(G)::QAB(H),XQ(d)
- Refutation
- B(e);XS(D)
- Try
- Q(H);N_SPINB(G)
- Threat
- B(G),XQ(d)
- Vars
- Q(d);CHECK,N_SPINQ(d),OGATE,XB(G)::QAB(H),XQ(d)
- Refutation
- B(e);XS(D)
- Try
- Q(H);
- Threat
- QAB(H),XP(g)
- Vars
- P(g);::QAB(H)
- Refutation
- Q(d);CHECK,N_SPINQ(d),XB(G)
- Try
- Q(H);
- Threat
- DUALS(3)
- Refutation
- Q(d);CHECK,N_SPINQ(d),XB(G)
- Try
- Q(H);N_SPINB(G)
- Threat
- DUALS(3)
- Vars
- Q(d);N_SPINQ(d),OGATE,P_PINQ(H),XB(G)::QAB(H),XQ(d)
- B(e);N_SPINB(b)::QAR2(H)
- B(e);::QAR2(H)
- Refutation
- B(e);XS(D)
- Try
- Actual
- Q(H);
- Threat
- QAB(H)+R(E),XQ(d)
- Vars
- Q(d);CHECK,N_SPINQ(d),OGATE,XB(G)::QAB(H)+R(E)
- R(f);N_PINB(G)::B(G),XQ(d)
- B(e);N_SPINB(b),SBLOCK::QAB(H)+R(E)
- B(e);N_GUARD,N_SPINB(b)::QAR(H),XB(e)
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).