MESON Chess Problem Database
Problem Display
PID: 200947 (nqrb2b1/rpk1pp1R/1p5R/p1p3p1/BP1N3p/2Q5/8/K1B5 w - - 0 1)
Coello Alonso, Jose Antonio
BCPS Website, 2020
#2
8 + 15
SOLUTION
- SOUND
- Sets
- 1...c4
- 2.Qxc4#
- 1...c4
- Tries
- 1.Se6+?
- 1...fxe6
- 2.Qe5#
- 1...Kd6!
- 1...fxe6
- 1.Bf4+?
- 1...e5
- 2.Bxe5#
- 1...gxf4!
- 1...e5
- 1.Be8?
- threat
- 2.Sb5#
- 1...b5
- 2.Sxb5#
- 2.Qxc5#
- 1...axb4+!
- threat
- 1.Rd6?
- threat
- 2.Sb5#
- 2.Rd7#
- 1...exd6
- 2.Se6#
- 1...b5
- 2.Sxb5#
- 2.Qxc5#
- 1...Kxd6!
- threat
- 1.Qd3?
- threat
- 2.Sb5#
- 1...cxd4
- 2.Qc2#
- 2.Qc4#
- 1...b5
- 2.Sxb5#
- 1...e6
- 2.Sxe6#
- 1...f6!
- threat
- 1.Qg3+?
- 1...e5
- 2.Qxe5#
- 1...hxg3!
- 1...e5
- 1.Se6+?
- Keys
- 1.Qd2!
- threat
- 2.Sb5#
- 1...cxd4
- 2.Qc2#
- 1...b5
- 2.Sxb5#
- 1...e6
- 2.Sxe6#
- 1...f6
- 2.Qh2#
- threat
- 1.Qd2!
This is a version of 200946
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- P(c);OGATEB::QAR(C),XP(c)
- Tries
- Try
- S(F);CHECK
- Vars
- P(j);XS(F)::QAB(C)
- Refutation
- K(h);N_SPINP(c),S_FLIGHT
- Try
- B(B);CHECK
- Vars
- P(i);::B(B),XP(i)
- Refutation
- P(d);XB(B)
- Try
- B(D);
- Threat
- S(F)
- Refutation
- P(b);CHECK,XP(E)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- P(i);SBLOCK,S_CUTP(j),XR(G)::S(F)
- Refutation
- K(h);N_SPINP(c),S_FLIGHT,XR(G)
- Try
- Q(C);N_PINP(c)
- Threat
- S(F)
- Vars
- P(e);::S(F),XP(e)
- P(i);P_SPINP(j)::S(F),XP(i)
- Refutation
- P(j);P_SPINP(i)
- Try
- Q(C);CHECK,N_PINP(c)
- Vars
- P(i);P_SPINP(i)::QAB(C),XP(i)
- Refutation
- P(a);XQ(C)
- Try
- Actual
- Q(C);N_PINP(c)
- Threat
- S(F)
- Vars
- P(c);OGATEB,XS(F)::QAR(C)
- P(e);::S(F),XP(e)
- P(i);P_SPINP(j)::S(F),XP(i)
- P(j);P_SPINP(i)::QAB(C)
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).