MESON Chess Problem Database
Problem Display
PID: 194317 (1k1B4/2pP4/Kb5R/2p5/6Rp/5Bq1/7Q/8 w - - 0 1)
Coello Alonso, Jose Antonio
BCPS Website, 2019
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rxb6#
- 1...Qf2
- 2.Rxb6#
- 1...Qg1
- 2.Rxb6#
- 1...Qg2
- 2.Rxb6#
- 1...Qh3
- 2.Rxb6#
- 1...Qxg4
- 2.Rxb6#
- 1...Qe1
- Tries
- 1.Be7?
- threat
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qxh2
- 2.Rg8#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qxf3
- 2.d8Q#
- 2.d8R#
- 1...Qxg4
- 2.Rxb6#
- 1...Qd6
- 2.Rg8#
- 2.Rh8#
- 1...Qe1
- 2.Rg8#
- 2.Rxb6#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qf2
- 2.Rg8#
- 2.Rxb6#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qf4
- 2.d8Q#
- 2.d8R#
- 1...Qe5
- 2.Rg8#
- 2.d8Q#
- 2.d8R#
- 1...Qg1
- 2.Rxb6#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qg2
- 2.Rxb6#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Qh3
- 2.Rg8#
- 2.Rxb6#
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Ba5
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...Ba7
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...h3
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...c4
- 2.Rh8#
- 2.d8Q#
- 2.d8R#
- 1...c6!
- threat
- 1.Rh8?
- threat
- 2.Bxh4#
- 2.Bg5#
- 2.Bf6#
- 2.Be7#
- 1...Qxf3
- 2.Bf6#
- 2.Bxc7#
- 1...Qxg4
- 2.Bg5#
- 2.Bxc7#
- 1...c6
- 2.Bxb6#
- 1...Qd6
- 2.Be7#
- 1...Qe1
- 2.Bxc7#
- 2.Be7#
- 1...Qf4
- 2.Bf6#
- 1...h3
- 2.Bh4#
- 2.Bg5#
- 2.Bf6#
- 2.Be7#
- 1...Qe5!
- threat
- 1.Be7?
- Keys
- 1.Rg8!
- threat
- 2.Bg5#
- 1...Qxf3
- 2.Bf6#
- 2.Bxc7#
- 1...Qxg8
- 2.Rxb6#
- 1...c6
- 2.Bxb6#
- 1...Qd6
- 2.Be7#
- 1...Qe1
- 2.Bxc7#
- 2.Be7#
- 2.Rxb6#
- 1...Qf4
- 2.Bf6#
- 1...Qe5
- 2.Be7#
- 1...Qg5
- 2.Bxg5#
- 2.Bxc7#
- 2.Rxb6#
- 1...Qg6
- 2.Bxc7#
- 1...Qg7
- 2.Bxc7#
- 2.Rxb6#
- threat
- 1.Rg8!
This is a version of 194316
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 6
- Sets
- Q(a);P_SPINP(e)::R(E),XB(d)
- Q(a);P_SPINP(e),XR(C)::R(E),XB(d)
- Tries
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- Q(a);P_SPINP(e),XB(B)::P=Q
- Q(a);P_SPINP(e),XR(C)::R(E),XB(d)
- Q(a);::P=Q
- Refutation
- P(e);P_SPINQ(a)
- Try
- R(E);
- Threat
- DUALS(4)
- Vars
- P(e);OGATE,P_SPINQ(a)::R(E)+B(G),XB(d)
- Q(a);::R(E)+B(G)
- Refutation
- Q(a);
- Try
- Actual
- R(C);
- Threat
- R(C)+B(G)
- Vars
- Q(a);P_SPINP(e),XR(C)::R(E),XB(d)
- P(e);OGATE,P_SPINQ(a)::R(C)+B(G),XB(d)
- Q(a);N_GUARD::R(C)+B(G)
- Q(a);P_SPINP(e)::R(C)+B(G),DCHECK,XP(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).