MESON Chess Problem Database
Problem Display
PID: 225524 (1R6/3pnK2/3P2P1/3NkN1p/2Pp1p1R/B2BnP2/8/1Q6 w - - 0 1)
Hronec, Jaroslav
1st Comm., Praca, 1957
#2
12 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Tries
- 1.Sdxe3?
- 1...Sxf5
- 2.Rb5#
- 2.Qb5#
- 1...Sxg6
- 2.Rb5#
- 2.Qb5#
- 1...dxe3
- 2.Bb2#
- 2.Qa1#
- 2.Qb2#
- 1...fxe3
- 2.f4#
- 1...Sc6
- 2.Rb5#
- 2.Qb5#
- 1...Sc8
- 2.Rb5#
- 2.Qb5#
- 1...Sg8
- 2.Rb5#
- 2.Qb5#
- 1...Sd5!
- 1...Sxf5
- 1.Sdxe7?
- 1...Sxc4
- 2.Rb5#
- 2.Qb5#
- 1...Sxf5
- 2.Rb5#
- 2.Qb5#
- 1...Sd1
- 2.Rb5#
- 2.Qb5#
- 1...Sf1
- 2.Rb5#
- 2.Qb5#
- 1...Sc2
- 2.Rb5#
- 2.Qb5#
- 1...Sg2
- 2.Rb5#
- 2.Qb5#
- 1...Sg4
- 2.Rb5#
- 2.Qb5#
- 1...Sd5!
- 1...Sxc4
- 1.Sfxe3?
- 1...Sxd5
- 2.Rxh5#
- 1...Sxg6
- 2.Rxh5#
- 1...dxe3
- 2.Qa1#
- 2.Qb2#
- 1...fxe3
- 2.f4#
- 1...Sc6
- 2.Rxh5#
- 1...Sc8
- 2.Rxh5#
- 1...Sg8
- 2.Rxh5#
- 1...Sf5!
- 1...Sxd5
- 1.Sfxe7?
- 1...Sxc4
- 2.Rxh5#
- 1...Sxd5
- 2.Rxh5#
- 1...Sd1
- 2.Rxh5#
- 1...Sf1
- 2.Rxh5#
- 1...Sc2
- 2.Rxh5#
- 1...Sg2
- 2.Rxh5#
- 1...Sg4
- 2.Rxh5#
- 1...Sf5!
- 1...Sxc4
- 1.Rb5?
- 1...Sxc4
- 2.Sdxe7#
- 1...S3xd5
- 2.Qe1#
- 1...S3xf5
- 2.Sxe7#
- 1...S7xf5
- 2.Sxe3#
- 1...Sxg6
- 2.Sdxe3#
- 1...Sd1
- 2.Sdxe7#
- 1...Sf1
- 2.Sdxe7#
- 1...Sc2
- 2.Sdxe7#
- 1...Sg2
- 2.Sdxe7#
- 1...Sg4
- 2.Sdxe7#
- 1...Sc6
- 2.Sdxe3#
- 1...Sc8
- 2.Sdxe3#
- 1...Sg8
- 2.Sdxe3#
- 1...S7xd5!
- 1...Sxc4
- 1.Qb5?
- 1...Sxc4
- 2.Sdxe7#
- 1...S3xf5
- 2.Sxe7#
- 1...S7xd5
- 2.Re8#
- 1...S7xf5
- 2.Sxe3#
- 1...Sxg6
- 2.Sdxe3#
- 1...Sd1
- 2.Sdxe7#
- 1...Sf1
- 2.Sdxe7#
- 1...Sc2
- 2.Sdxe7#
- 1...Sg2
- 2.Sdxe7#
- 1...Sg4
- 2.Sdxe7#
- 1...Sc6
- 2.Sdxe3#
- 1...Sc8
- 2.Sdxe3#
- 1...Sg8
- 2.Sdxe3#
- 1...S3xd5!
- 1...Sxc4
- 1.Sdxe3?
- Keys
- 1.Rxh5!
- 1...Sxc4
- 2.Sfxe7#
- 1...S3xd5
- 2.Sxe7#
- 1...S3xf5
- 2.Qe1#
- 1...S7xd5
- 2.Sxe3#
- 1...S7xf5
- 2.Re8#
- 1...Sxg6
- 2.Sfxe3#
- 1...Sd1
- 2.Sfxe7#
- 1...Sf1
- 2.Sfxe7#
- 1...Sc2
- 2.Sfxe7#
- 1...Sg2
- 2.Sfxe7#
- 1...Sg4
- 2.Sfxe7#
- 1...Sc6
- 2.Sfxe3#
- 1...Sc8
- 2.Sfxe3#
- 1...Sg8
- 2.Sfxe3#
- 1...Sxc4
- 1.Rxh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(G);XS(a)
- Vars
- P(c);OGATE,XS(G)::P(D)
- Refutation
- S(g);
- Try
- S(G);XS(g)
- Refutation
- S(a);
- Try
- S(H);XS(a)
- Vars
- S(g);N_GUARD,XS(G)::R(F),XP(e)
- S(g);N_GUARD,XP(J)::R(F),XP(e)
- P(c);OGATE,XS(H)::P(D)
- S(g);N_GUARD::R(F),XP(e)
- Refutation
- S(g);
- Try
- S(H);XS(g)
- Vars
- S(a);N_GUARD,XP(E)::R(F),XP(e)
- S(a);N_GUARD,XS(G)::R(F),XP(e)
- S(a);N_GUARD::R(F),XP(e)
- Refutation
- S(a);
- Try
- R(L);
- Vars
- S(a);N_GUARD,XP(E)::R(L)+S(G),XS(g)
- S(a);OGATEB,P_SPINS(a),XS(G)::QAR(A)
- S(a);N_GUARD,XS(H)::R(L)+S(G),XS(g)
- S(g);N_GUARD,XS(H)::R(L)+S(G),XS(a)
- S(g);N_GUARD,XP(J)::R(L)+S(G),XS(a)
- S(a);N_GUARD::R(L)+S(G),XS(g)
- S(g);N_GUARD::R(L)+S(G),XS(a)
- Refutation
- S(g);P_SPINS(g),XS(G)
- Try
- Q(A);
- Vars
- S(a);N_GUARD,XP(E)::QAR(A)+S(G),XS(g)
- S(a);N_GUARD,XS(H)::QAR(A)+S(G),XS(g)
- S(g);OGATEB,P_SPINS(g),XS(G)::R(L)
- S(g);N_GUARD,XS(H)::QAR(A)+S(G),XS(a)
- S(g);N_GUARD,XP(J)::QAR(A)+S(G),XS(a)
- S(a);N_GUARD::QAR(A)+S(G),XS(g)
- S(g);N_GUARD::QAR(A)+S(G),XS(a)
- Refutation
- S(a);P_SPINS(a),XS(G)
- Try
- Actual
- R(F);XP(e)
- Vars
- S(a);N_GUARD,XP(E)::R(F)+S(H),XS(g)
- S(a);N_GUARD,XS(G)::R(F)+S(H),XS(g)
- S(a);OGATEB,P_SPINS(a),XS(H)::QAR(A)
- S(g);N_GUARD,XS(G)::R(F)+S(H),XS(a)
- S(g);OGATEB,P_SPINS(g),XS(H)::R(L)
- S(g);N_GUARD,XP(J)::R(F)+S(H),XS(a)
- S(a);N_GUARD::R(F)+S(H),XS(g)
- S(g);N_GUARD::R(F)+S(H),XS(a)
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).