MESON Chess Problem Database
Problem Display
PID: 81188 (3r1bbQ/1nB5/2B3N1/r5p1/p2R4/R1P1kPpp/1N2p3/4K3 w - - 0 1)
Casa, Alex
1st Prize, Probleemblad 088. TT, 1952
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.c4#
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Ra7
- 2.Qe5#
- 1...Raa8
- 2.Qe5#
- 1...Rxd4
- 2.Qxd4#
- 1...Rd6
- 2.c4#
- 1...Rda8
- 2.Rd3#
- 1...Rb8
- 2.Rd3#
- 1...Rc8
- 2.Rd3#
- 1...Re8
- 2.Rd3#
- 1...Bc5
- 2.Qe5#
- 1...Bd6
- 2.Rd3#
- 1...Bh6
- 2.c4#
- 1...Bc4
- 2.Sxc4#
- 1...Bd5
- 2.Rd3#
- 1...Bh7
- 2.Sc4#
- 1...Sd6
- 2.Rd3#
- 2.c4#
- 1...g4
- 2.Bf4#
- 1...Rc5
- Tries
- 1.Bb6?
- threat
- 2.Rd3#
- 1...Rxd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Rc5
- 2.c4#
- 1...Bc5
- 2.Qe5#
- 1...Sc5!
- threat
- 1.Bd6?
- threat
- 2.Rd3#
- 2.c4#
- 1...Rxd6
- 2.c4#
- 1...Bxd6
- 2.Rd3#
- 1...Rd5
- 2.c4#
- 1...Rb5
- 2.Rd3#
- 1...Re5
- 2.Rd3#
- 2.Qxe5#
- 1...Bg7
- 2.Rd3#
- 1...Ba2
- 2.Rd3#
- 1...Bb3
- 2.Rd3#
- 1...Bc4
- 2.Sxc4#
- 1...Sc5!
- threat
- 1.Bxd8?
- threat
- 2.Rd3#
- 1...Bc4
- 2.Sxc4#
- 1...Sc5
- 2.Bxg5#
- 1...Rd5!
- threat
- 1.Qf6?
- threat
- 2.Re4#
- 1...Rxd4
- 2.Qxd4#
- 1...Re5
- 2.Qxe5#
- 1...Re8
- 2.Rd3#
- 1...Bd5
- 2.Rd3#
- 1...Sc5
- 2.Qxg5#
- 1...Sd6
- 2.Rd3#
- 2.c4#
- 1...Rf5!
- threat
- 1.Qh4?
- threat
- 2.Qe4#
- 1...Rxd4
- 2.Qxd4#
- 1...gxh4
- 2.Bf4#
- 1...Bd5
- 2.Rd3#
- 1...Re8
- 2.Rd3#
- 1...Sc5
- 2.Qxg5#
- 1...Sd6
- 2.Rd3#
- 2.c4#
- 1...g4
- 2.Bf4#
- 1...Re5!
- threat
- 1.Bb6?
- Keys
- 1.Sh4!
- threat
- 2.Re4#
- 1...Rxd4
- 2.Qxd4#
- 1...gxh4
- 2.Bf4#
- 1...Re5
- 2.Qxe5#
- 1...Re8
- 2.Rd3#
- 1...Bd5
- 2.Rd3#
- 1...Bh7
- 2.Sc4#
- 1...Sc5
- 2.Sf5#
- 1...Sd6
- 2.c4#
- threat
- 1.Sh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- R(f);S_CUTB(j)::R(C)+P(D)
- R(f);N_GUARD::QAR2(J),XR(f)
- R(f);N_GUARD::QAR2(J)
- R(i);OGATE,XR(F)::QAB1(J),XR(i)
- R(i);S_CUTB(j)::R(C)+P(D)
- R(i);N_GUARD::R1(F)
- B(j);S_CUTR(f)::QAR2(J)
- B(j);S_CUTR(i)::R1(F)
- B(j);N_GUARD::R(C)+P(D)
- B(k);N_GUARD::S(B),XB(k)
- B(k);S_CUTR(i)::R1(F)
- B(k);N_GUARD::S(B)
- P(g);N_GUARD::B(I)
- Tries
- Try
- B(I);
- Threat
- B(I)+R(F),DCHECK
- Vars
- R(f);S_CUTB(j)::R(C)+P(D)
- B(j);S_CUTR(f)::QAR2(J)
- Refutation
- S(h);
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(i);XB(I)::R(C)+P(D)
- B(j);XB(I)::R1(F)
- R(f);::R(C)+P(D)
- R(f);::R1(F)
- B(j);::R1(F)
- B(k);::R1(F)
- B(k);N_GUARD::S(B),XB(k)
- Refutation
- S(h);
- Try
- B(I);XR(i)
- Threat
- R1(F)
- Vars
- B(k);N_GUARD::S(B),XB(k)
- S(h);S_CUTR(f)::B(I),XP(g)
- Refutation
- R(f);
- Try
- Q(J);
- Threat
- R1(F)
- Vars
- R(i);OGATE,XR(F)::QAB1(J),XR(i)
- R(f);N_GUARD::QAR2(J),XR(f)
- R(i);N_GUARD::R1(F)
- B(k);S_CUTR(i)::R1(F)
- S(h);S_CUTR(f)::QAB(J),XP(g)
- Refutation
- R(f);
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- R(i);OGATE,XR(F)::QAB1(J),XR(i)
- P(g);N_GUARD,XQ(J)::B(I)
- B(k);S_CUTR(i)::R1(F)
- R(i);N_GUARD::R1(F)
- S(h);S_CUTR(f)::QAB(J),XP(g)
- P(g);N_GUARD::B(I)
- Refutation
- R(f);
- Try
- Actual
- S(H);
- Threat
- R1(F)
- Vars
- R(i);OGATE,XR(F)::QAB1(J),XR(i)
- P(g);N_GUARD,XS(H)::B(I)
- R(f);N_GUARD::QAR2(J),XR(f)
- R(i);N_GUARD::R1(F)
- B(k);S_CUTR(i)::R1(F)
- B(k);N_GUARD::S(B)
- S(h);S_CUTR(f)::S(H)
- S(h);S_CUTB(j)::R(C)+P(D)
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).