MESON Chess Problem Database
Problem Display
PID: 87564 (5NK1/2r3p1/n2p4/3Bk2N/3RPp2/B3PP2/6r1/8 w - - 0 1)
Kalkavouras, Ioannis
The Problemist, 1992
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sg6#
- 1...Rb2
- 2.Sg6#
- 1...Rgc2
- 2.Sg6#
- 1...Rd2
- 2.Sg6#
- 1...Re2
- 2.Sg6#
- 1...Rf2
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Rc1
- 2.Sd7#
- 1...Rcc2
- 2.Sd7#
- 1...Rc3
- 2.Sd7#
- 1...Rc4
- 2.Sd7#
- 1...Rc5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 1...Rd7
- 2.Sxd7#
- 1...g5
- 2.Sg6#
- 1...Ra2
- Tries
- 1.Ba2?
- threat
- 2.Bxd6#
- 2.Rd5#
- 1...fxe3
- 2.Rd5#
- 1...Rd2
- 2.Sg6#
- 2.Bxd6#
- 1...Rg6
- 2.Sxg6#
- 2.Rd5#
- 1...Rc5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 2.Rd5#
- 1...Rd7
- 2.Sxd7#
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Bb3?
- threat
- 2.Bxd6#
- 2.Rd5#
- 1...fxe3
- 2.Rd5#
- 1...Rd2
- 2.Sg6#
- 2.Bxd6#
- 1...Rg6
- 2.Sxg6#
- 2.Rd5#
- 1...Rc5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 2.Rd5#
- 1...Rd7
- 2.Sxd7#
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Bc4?
- threat
- 2.Bxd6#
- 2.Rd5#
- 1...fxe3
- 2.Rd5#
- 1...Rd2
- 2.Sg6#
- 2.Bxd6#
- 1...Rg6
- 2.Sxg6#
- 2.Rd5#
- 1...Rc5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 2.Rd5#
- 1...Rd7
- 2.Sxd7#
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Bc6?
- threat
- 2.Bxd6#
- 2.Rd5#
- 1...Rxc6
- 2.Rd5#
- 1...fxe3
- 2.Rd5#
- 1...Rd2
- 2.Bxd6#
- 1...Rg6
- 2.Rd5#
- 1...Rd7
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Bf7?
- threat
- 2.Bxd6#
- 2.Rd5#
- 1...fxe3
- 2.Rd5#
- 1...Rd2
- 2.Sg6#
- 2.Bxd6#
- 1...Rg6
- 2.Sxg6#
- 2.Rd5#
- 1...Rc5
- 2.Sd7#
- 1...Rc6
- 2.Sd7#
- 2.Rd5#
- 1...Rd7
- 2.Sxd7#
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...d5
- 2.Rxd5#
- 1...Sb4!
- threat
- 1.Rd2?
- threat
- 2.exf4#
- 1...Rxd2
- 2.Sg6#
- 1...fxe3
- 2.f4#
- 1...Rf7
- 2.Bb2#
- 1...g5
- 2.Sg6#
- 1...Rg4!
- threat
- 1.Rc4?
- threat
- 2.exf4#
- 1...Rxc4
- 2.Sd7#
- 1...fxe3
- 2.f4#
- 1...Rg4
- 2.Bb2#
- 1...g5
- 2.Sg6#
- 1...Rf7!
- threat
- 1.Ba2?
- Keys
- 1.Bb2!
- threat
- 2.exf4#
- 1...Rxb2
- 2.Sg6#
- 1...fxe3
- 2.f4#
- 1...Rg4
- 2.Rc4#
- 1...Rc3
- 2.Sd7#
- 1...Rf7
- 2.Rd2#
- 1...g5
- 2.Sg6#
- threat
- 1.Bb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- R(a);N_GUARD::S(H)
- R(a);N_GUARD::S(H),XR(a)
- R(f);N_GUARD::S(H)
- R(f);N_GUARD::S(H),XR(f)
- P(g);S_CUTR(a)::S(H)
- Tries
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- P(b);XP(B)::R1(D)
- R(f);N_GUARD::S(H)
- S(d);::R1(D)
- P(e);::R1(D),XP(e)
- Refutation
- S(d);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- P(b);XP(B)::R1(D)
- R(f);N_GUARD::S(H)
- S(d);::R1(D)
- P(e);::R1(D),XP(e)
- Refutation
- S(d);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- P(b);XP(B)::R1(D)
- R(f);N_GUARD::S(H)
- S(d);::R1(D)
- P(e);::R1(D),XP(e)
- Refutation
- S(d);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(f);XB(F)::R1(D)
- P(b);XP(B)::R1(D)
- R(a);::B(A),XP(e)
- R(a);::R1(D)
- R(f);::R1(D)
- S(d);::R1(D)
- P(e);::R1(D),XP(e)
- Refutation
- S(d);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- P(b);XP(B)::R1(D)
- R(f);N_GUARD::S(H)
- S(d);::R1(D)
- P(e);::R1(D),XP(e)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- P(B),XP(b)
- Vars
- R(a);N_GUARD,XR(D)::S(H)
- P(b);OGATE,XP(B)::P(C)
- R(f);N_GUARD::B(A)
- P(g);S_CUTR(a)::S(H)
- Refutation
- R(a);
- Try
- R(D);
- Threat
- P(B),XP(b)
- Vars
- R(f);N_GUARD,XR(D)::S(H)
- P(b);OGATE,XP(B)::P(C)
- R(a);N_GUARD::B(A)
- P(g);S_CUTR(a)::S(H)
- Refutation
- R(f);
- Try
- Actual
- B(A);
- Threat
- P(B),XP(b)
- Vars
- R(a);N_GUARD,XB(A)::S(H)
- P(b);OGATE,XP(B)::P(C)
- R(a);N_GUARD::B(A)+R(D)
- R(f);N_GUARD::S(H)
- R(f);N_GUARD::B(A)+R(D)
- P(g);S_CUTR(a)::S(H)
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).