MESON Chess Problem Database
Problem Display
PID: 16319 (q1b4R/1p1p3N/r7/r7/8/5B2/P3N1PB/4K2k w - - 0 1)
Andrade, Barry Jack da Costa
Chess, 1940
#2
8 + 7
SOLUTION
- SOUND
- Tries
- 1.Sg5?
- threat
- 2.Sg3#
- 2.Bd6#
- 2.g3#
- 2.g4#
- 1...Rxg5
- 2.g3#
- 2.g4#
- 1...Qb8
- 2.Bd6#
- 2.g3#
- 2.g4#
- 1...Ra3
- 2.Sg3#
- 2.Bd6#
- 1...Ra4
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...Re5
- 2.g3#
- 2.g4#
- 1...Rf5
- 2.Sg3#
- 2.Bd6#
- 1...Rd6
- 2.Sg3#
- 2.Bxd6#
- 2.g3#
- 2.g4#
- 1...Re6
- 2.g3#
- 2.g4#
- 1...Rf6
- 2.Sg3#
- 1...Rg6
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...b5
- 2.Sg3#
- 2.Bd6#
- 1...b6
- 2.Sg3#
- 2.Bg1#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...d5
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...d6
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...Rh6!
- threat
- 1.Sf6?
- threat
- 2.Sg3#
- 2.Be5#
- 2.g3#
- 2.g4#
- 1...Rxf6
- 2.Sg3#
- 1...Qb8
- 2.Be5#
- 2.g3#
- 2.g4#
- 1...Ra3
- 2.Sg3#
- 2.Bg1#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Ra4
- 2.Sg3#
- 2.Bf4#
- 2.g3#
- 2.g4#
- 1...Re5
- 2.Bxe5#
- 2.g3#
- 2.g4#
- 1...Rf5
- 2.Sg3#
- 1...Rg5
- 2.g3#
- 2.g4#
- 1...Re6
- 2.Be5#
- 2.g3#
- 2.g4#
- 1...b5
- 2.Sg3#
- 2.Bg1#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...b6
- 2.Sg3#
- 2.Be5#
- 1...d5
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...d6
- 2.Sg3#
- 2.g3#
- 2.g4#
- 1...Rh5!
- threat
- 1.Be5?
- threat
- 2.Sf6#
- 2.g4#
- 1...Ra3
- 2.Sf6#
- 1...Ra4
- 2.g4#
- 1...Rf6
- 2.Sxf6#
- 1...Rg6
- 2.g4#
- 1...Rh6
- 2.g4#
- 1...b5
- 2.Sf6#
- 1...b6
- 2.Sg5#
- 2.Sf6#
- 2.Sf8#
- 1...d5
- 2.g4#
- 1...d6
- 2.g4#
- 1...Rxe5!
- threat
- 1.Bd6?
- threat
- 2.Sg5#
- 2.g4#
- 1...Re5
- 2.Sg5#
- 1...Ra3
- 2.Sg5#
- 2.Sf6#
- 2.Sf8#
- 1...Ra4
- 2.g4#
- 1...Rf5
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 2.g4#
- 1...Rh5
- 2.g4#
- 1...b5
- 2.Sg5#
- 2.Sf6#
- 2.Sf8#
- 1...b6
- 2.Sg5#
- 1...Rxd6!
- threat
- 1.Sg5?
- Keys
- 1.Bf4!
- threat
- 2.g4#
- 1...Ra3
- 2.Sf6#
- 1...b5
- 2.Sf6#
- 1...b6
- 2.Sg5#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- R(c);::S(C)
- Refutation
- R(c);
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- R(c);XS(G)::S(C)
- R(b);::S(C)
- Refutation
- R(b);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(b);SBLOCK::R(H)+S(G)
- R(b);::B(F)+P(D)
- R(c);::R(H)+S(G),XR(c)
- R(c);::B(F)+P(D)
- P(d);::R(H)+S(G)
- P(e);::B(F)+P(D)
- Refutation
- R(b);P_PINS(C),XB(E)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(b);P_PINS(C)::R(H)+S(G)
- R(b);::B(F)+P(D)
- R(b);::R(H)+S(G)
- P(d);::R(H)+S(G)
- Refutation
- R(c);XB(E)
- Try
- Actual
- B(E);
- Threat
- B(F)+P(D)
- Vars
- R(b);N_GUARD,SBLOCK::R(H)+S(G)
- P(d);S_CUTR(b)::R(H)+S(G)
- P(d);S_CUTR(c)::R(H)+S(G)
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).