MESON Chess Problem Database
Problem Display
PID: 247660 (B7/B2p4/3b4/r1R1p2b/Qprk1p2/1n6/1P2PK2/n2N4 w - - 0 1)
Eddy, Edwin John
British Chess Magazine, 1932
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.bxc3#
- 1...Rcxc5
- 2.Qxb4#
- 1...Bxc5
- 2.Qxd7#
- 1...e4
- 2.Rd5#
- 1...Rc3
- Tries
- 1.Rxa5+?
- 1...Rc5
- 2.Qxb4#
- 1...Bc5
- 2.Qxd7#
- 1...Sc5!
- 1...Rc5
- 1.Qxb3?
- threat
- 2.Rxc4#
- 2.Qxc4#
- 2.Qd3#
- 1...Rcxc5
- 2.Qd5#
- 2.Qd3#
- 2.Qxb4#
- 1...Raxc5
- 2.Qd3#
- 1...Rxa7
- 2.Rxc4#
- 2.Qxc4#
- 1...Bxe2
- 2.Rxc4#
- 1...Bxc5
- 2.Qd3#
- 1...Rc1
- 2.Rc4#
- 2.Qd5#
- 2.Qd3#
- 1...Rc2
- 2.Rc4#
- 2.Qd5#
- 2.Qd3#
- 1...Rc3
- 2.Rc4#
- 2.Qd5#
- 1...Ra3
- 2.Rxc4#
- 2.Qxc4#
- 1...Bg6
- 2.Rxc4#
- 2.Qxc4#
- 1...Bf7
- 2.Rxc4#
- 2.Qd3#
- 1...e4
- 2.Rd5#
- 2.Qxc4#
- 1...Sxb3!
- threat
- 1.Qc6?
- threat
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rcxc5
- 2.Qe4#
- 2.Qd5#
- 1...Raxc5
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rxa7
- 2.Rxc4#
- 2.Qd5#
- 2.Qxd6#
- 1...Bxe2
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Bxc5
- 2.Qe4#
- 2.Qd5#
- 2.Qxd7#
- 2.Qd6#
- 1...Sxc5
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rc1
- 2.Rc4#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rc2
- 2.Rc4#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rc3
- 2.Rc4#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd6#
- 1...Ra6
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 1...Bf3
- 2.Rxc4#
- 1...Bg6
- 2.Rxc4#
- 2.Qd5#
- 2.Qxd6#
- 1...Bf7
- 2.Rxc4#
- 2.Qe4#
- 1...Bc7
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 1...Be7
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 1...Bb8
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 1...Bf8
- 2.Rxc4#
- 2.Qe4#
- 2.Qd5#
- 1...Sd2
- 2.Rxc4#
- 2.Qd5#
- 2.Qxd6#
- 1...e4
- 2.Rd5#
- 2.Qxe4#
- 2.Qd5#
- 2.Qxd6#
- 1...dxc6!
- threat
- 1.Rxa5+?
- Keys
- 1.Sc3!
- threat
- 2.Rd5#
- 1...Rxc3
- 2.bxc3#
- 1...Rcxc5
- 2.Qxb4#
- 1...Raxc5
- 2.Sb5#
- 1...Bxc5
- 2.Qxd7#
- 1...Sxc5
- 2.Qd1#
- 1...bxc3
- 2.Rxc4#
- 2.Qxc4#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(d);OGATE,P_SPINP(c)::P(B),XR(d)
- R(d);OGATEB,P_SPINP(c),P_SPINR(d),XR(F)::QAR2(E),XP(c)
- B(j);OGATEB,P_SPINB(j),XR(F)::QAR(E),XP(k)
- P(h);SBLOCK::B(G)+R(F),DCHECK
- Tries
- Try
- R(F);CHECK,XR(g)
- Vars
- R(d);P_SPINP(c),P_SPINR(d),S_CUTB(j),S_CUTS(b)::QAR2(E),XP(c)
- B(j);P_SPINB(j),S_CUTR(d),S_CUTS(b)::QAR(E),XP(k)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(E);XS(b)
- Threat
- DUALS(3)
- Vars
- R(g);P_SPINR(g),XR(F)::QAR1(E)
- B(i);XP(C)::B(G)+R(F),DCHECK,XR(d)
- B(j);P_SPINB(j),XR(F)::QAR1(E)
- Refutation
- S(a);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- B(i);::B(G)+R(F),DCHECK,XR(d)
- Refutation
- P(k);XQ(E)
- Try
- Actual
- S(A);
- Threat
- B(G)+R(F),DCHECK
- Vars
- R(d);OGATE,P_SPINP(c),XS(A)::P(B),XR(d)
- R(d);OGATEB,P_SPINP(c),P_SPINR(d),XR(F)::QAR2(E),XP(c)
- R(g);N_GUARD,P_SPINR(g),XR(F)::S(A)
- B(j);OGATEB,P_SPINB(j),XR(F)::QAR(E),XP(k)
- S(b);OGATE,P_SPINS(b),XR(F)::QAR(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).