MESON Chess Problem Database
Problem Display
PID: 214946 (Q1N3B1/2K4n/p1p2p2/4k2r/n2N2R1/8/2rp4/5R2 w - - 0 1)
Anonymous
SEPA, 1942
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sxc6#
- 1...Rb2
- 2.Sxc6#
- 1...Rh1
- 2.Rf5#
- 1...Rh2
- 2.Rf5#
- 1...Rh3
- 2.Rf5#
- 1...Rh4
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Rh6
- 2.Rf5#
- 1...Sc3
- 2.Sxc6#
- 1...Sc5
- 2.Sxc6#
- 1...Sg5
- 2.Rf5#
- 1...c5
- 2.Sc6#
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Ra2
- Tries
- 1.Kd8?
- threat
- 2.Qb8#
- 1...Rb2
- 2.Sxc6#
- 1...f5!
- threat
- 1.Sb6?
- threat
- 2.Sd7#
- 2.Qe8#
- 1...Sxb6
- 2.Qe8#
- 1...f5
- 2.Sd7#
- 1...Sc5
- 2.Sxc6#
- 1...Sg5
- 2.Sd7#
- 2.Rf5#
- 1...Sf8!
- threat
- 1.Sd6?
- threat
- 2.Sf3#
- 2.Re4#
- 2.Qe8#
- 1...d1Q
- 2.Re4#
- 2.Qe8#
- 1...d1B
- 2.Re4#
- 2.Qe8#
- 1...Rc3
- 2.Re4#
- 2.Qe8#
- 1...Rh3
- 2.Rf5#
- 2.Re4#
- 2.Qe8#
- 1...Rh4
- 2.Sf3#
- 2.Rf5#
- 2.Qe8#
- 1...Rf5
- 2.Rxf5#
- 2.Re4#
- 2.Qe8#
- 1...Sc3
- 2.Sf3#
- 2.Sxc6#
- 2.Sc4#
- 2.Qe8#
- 1...Sc5
- 2.Sf3#
- 2.Sxc6#
- 1...Sg5
- 2.Rf5#
- 1...Sf8
- 2.Sf3#
- 2.Re4#
- 1...f5!
- threat
- 1.Se7?
- threat
- 2.Sf3#
- 2.Sg6#
- 1...d1Q
- 2.Sg6#
- 1...d1B
- 2.Sg6#
- 1...Rc3
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 2.Rf5#
- 1...Rf5
- 2.Sg6#
- 2.Rxf5#
- 1...Rg5
- 2.Sf3#
- 1...Rh6
- 2.Sf3#
- 2.Rf5#
- 1...Sg5
- 2.Sg6#
- 2.Rf5#
- 1...Sf8
- 2.Sf3#
- 1...f5!
- threat
- 1.Rff4?
- threat
- 2.Sf3#
- 2.Re4#
- 1...d1Q
- 2.Re4#
- 1...d1B
- 2.Re4#
- 1...Rc3
- 2.Re4#
- 1...Rh3
- 2.Re4#
- 2.Rf5#
- 1...Sc3
- 2.Sf3#
- 2.Sxc6#
- 1...Sc5
- 2.Sf3#
- 2.Sxc6#
- 1...Sg5
- 2.Rf5#
- 1...f5!
- threat
- 1.Qb8?
- threat
- 2.Kb7#
- 2.Kd7#
- 2.Kd8#
- 1...Rb2
- 2.Sxc6#
- 1...Sc5
- 2.Kb6#
- 2.Kxc6#
- 2.Kd8#
- 2.Sxc6#
- 1...Sb6
- 2.Kxb6#
- 2.Kb7#
- 2.Kd8#
- 1...Sf8
- 2.Kb7#
- 2.Kd8#
- 1...f5!
- threat
- 1.Kd8?
- Keys
- 1.Qxc6!
- threat
- 2.Re4#
- 1...Rxc6+
- 2.Sxc6#
- 1...Rh4
- 2.Rf5#
- 1...Sc3
- 2.Qe8#
- 2.Qd6#
- 2.Qe6#
- 1...Sc5
- 2.Qd5#
- 2.Qd6#
- 1...Sg5
- 2.Rf5#
- 1...f5
- 2.Sf3#
- threat
- 1.Qxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::S(B),XP(g)
- R(e);N_GUARD::R1(A)
- R(e);N_GUARD::R1(A),XR(e)
- S(c);S_CUTR(a)::S(B),XP(g)
- S(i);S_CUTR(e)::R1(A)
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- QAB(E)
- Vars
- R(a);N_GUARD::S(B),XP(g)
- Refutation
- P(h);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(c);XS(F)::QAR(E)
- P(h);::S(F)
- S(c);S_CUTR(a)::S(B),XP(g)
- Refutation
- S(i);
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- S(i);S_CUTR(e)::R1(A)
- Refutation
- P(h);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(b);::S(F)
- R(a);::S(F)
- R(e);::S(B)
- S(i);::S(B)
- Refutation
- P(h);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- P(b);::R1(A)
- R(a);::R1(A)
- S(i);S_CUTR(e)::R1(A)
- Refutation
- P(h);
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- R(a);N_GUARD::S(B),XP(g)
- Refutation
- P(h);
- Try
- Actual
- Q(E);P_SPINQ(E),XP(g)
- Threat
- R1(C)
- Vars
- R(a);CHECK,XQ(E)::S(B),XR(a)
- R(e);N_GUARD::R1(A)
- S(i);S_CUTR(e)::R1(A)
- P(h);SBLOCK::S(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).