MESON Chess Problem Database
Problem Display
PID: 62496 (4Q3/1p5p/q3n2B/p1r1b3/2B1k1NN/1PP5/K2R1R1r/5bn1 w - - 0 1)
Andrade, Barry Jack da Costa
Chess, 1944
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rxf2
- 2.Sxf2#
- 1...Rd5
- 2.Bxd5#
- 1...Rc6
- 2.Bd5#
- 1...Rc7
- 2.Bd5#
- 1...Rc8
- 2.Bd5#
- 1...Bxc3
- 2.Rf4#
- 1...Bg3
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 2.Rf4#
- 1...Bf4
- 2.Rd4#
- 2.Rxf4#
- 1...Bd6
- 2.Rd4#
- 1...Bf6
- 2.Rf4#
- 1...Bc7
- 2.Rd4#
- 1...Bg7
- 2.Rf4#
- 1...Bb8
- 2.Rd4#
- 1...Bh8
- 2.Rf4#
- 1...Sd4
- 2.Rxd4#
- 2.Rf4#
- 1...Sf4
- 2.Rd4#
- 2.Rxf4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 2.Rf4#
- 1...Sg7
- 2.Rd4#
- 2.Rf4#
- 1...Sd8
- 2.Rd4#
- 2.Rf4#
- 1...Sf8
- 2.Rd4#
- 2.Rf4#
- 1...Rxf2
- Tries
- 1.Qxe6?
- threat
- 2.Sf6#
- 2.Rd4#
- 2.Rf4#
- 2.Qf5#
- 1...Qxc4
- 2.Sf6#
- 2.Rf4#
- 2.Qf5#
- 1...Rxf2
- 2.Sxf2#
- 1...Rxc4
- 2.Sf6#
- 2.Rf4#
- 2.Qd5#
- 2.Qf5#
- 2.Qxe5#
- 1...Qd6
- 2.Sf6#
- 2.Rf4#
- 2.Qf5#
- 1...Rd5
- 2.Sf6#
- 2.Bxd5#
- 2.Rf4#
- 2.Qxd5#
- 2.Qf5#
- 1...Bd3
- 2.Sf6#
- 2.Rf4#
- 2.Qf5#
- 1...Se2
- 2.Sf6#
- 2.Qf5#
- 1...Sf3
- 2.Sf6#
- 2.Qf5#
- 1...Sh3
- 2.Sf6#
- 2.Rd4#
- 2.Qf5#
- 1...Qxe6!
- threat
- 1.Qxe6?
- Keys
- 1.Qe7!
- threat
- 2.Qxh7#
- 1...Rxf2
- 2.Sxf2#
- 1...Bxc3
- 2.Rf4#
- 1...Bg3
- 2.Rd4#
- 1...Rc7
- 2.Bd5#
- 1...Bd4
- 2.Rxd4#
- 2.Rf4#
- 1...Bf4
- 2.Rd4#
- 2.Rxf4#
- 1...Bd6
- 2.Rd4#
- 1...Bf6
- 2.Rf4#
- 1...Bc7
- 2.Rd4#
- 1...Bg7
- 2.Rf4#
- 1...Bb8
- 2.Rd4#
- 1...Bh8
- 2.Rf4#
- 1...Sd4
- 2.Rxd4#
- 2.Rf4#
- 1...Sf4
- 2.Rd4#
- 2.Rxf4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 2.Rf4#
- 1...Sg7
- 2.Rd4#
- 2.Rf4#
- 1...Sd8
- 2.Rd4#
- 2.Rf4#
- 1...Sf8
- 2.Rd4#
- 2.Rf4#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(c);P_PINR(B),XR(C)::S(G),XR(c)
- R(f);N_GUARD::B(F),XR(f)
- R(f);N_GUARD::B(F)
- B(g);N_GUARD,P_SPINS(i),XP(E)::R1(C)
- B(g);N_GUARD,P_SPINS(i)::R1(B)
- B(g);N_GUARD,P_SPINS(i)::R1(C)
- S(i);N_GUARD,P_SPINB(g)::R1(B)
- Tries
- Try
- Q(J);P_PINB(g),XS(i)
- Threat
- DUALS(4)
- Vars
- R(c);P_PINR(B),XR(C)::S(G),XR(c)
- Refutation
- Q(h);N_SPINB(g),XQ(J)
- Try
- Actual
- Q(J);
- Threat
- QAB(J),XP(k)
- Vars
- R(c);P_PINR(B),XR(C)::S(G),XR(c)
- B(g);N_GUARD,P_SPINS(i),XP(E)::R1(C)
- B(g);N_GUARD,P_SPINS(i)::R1(B)
- R(f);N_GUARD::B(F)
- B(g);N_GUARD,P_SPINS(i)::R1(C)
- S(i);N_GUARD,P_SPINB(g)::R1(B)
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).