MESON Chess Problem Database
Problem Display
PID: 175433 (5n2/Q7/1P3p1K/2n1NB2/4Pk2/6p1/6P1/6B1 w - - 0 1)
Stepanov, AS
Duna Zeitung, 1899
#2
8 + 5
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Qb8#
- 2.Qc7#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Kxe5
- Tries
- 1.Sc4?
- threat
- 2.Be3#
- 2.Qb8#
- 2.Qc7#
- 1...Sd3
- 2.Be3#
- 1...Sa6
- 2.Be3#
- 1...Sce6
- 2.Be3#
- 1...Sb7
- 2.Be3#
- 1...Scd7
- 2.Be3#
- 1...Sfe6
- 2.Be3#
- 1...Sg6
- 2.Be3#
- 1...Sfd7
- 2.Be3#
- 1...Sxe4!
- threat
- 1.Sg4?
- threat
- 2.Be3#
- 2.Qb8#
- 2.Qc7#
- 1...Sd3
- 2.Be3#
- 1...Sa6
- 2.Be3#
- 1...Sce6
- 2.Be3#
- 1...Sb7
- 2.Be3#
- 1...Scd7
- 2.Be3#
- 1...Sfe6
- 2.Be3#
- 1...Sg6
- 2.Be3#
- 1...Sfd7
- 2.Be3#
- 1...Sxe4!
- threat
- 1.Be3+?
- 1...Kxe5
- 2.Qb8#
- 2.Qc7#
- 1...Kxe3!
- 1...Kxe5
- 1.Bxc5?
- threat
- 2.Sd3#
- 1...Kxe5
- 2.Qb8#
- 2.Qc7#
- 1...fxe5!
- threat
- 1.Qa1?
- 1...fxe5
- 2.Qc1#
- 2.Qf1#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Sxe4!
- 1...fxe5
- 1.Qa3?
- 1...Kxe5
- 2.Qxg3#
- 1...fxe5
- 2.Be3#
- 2.Qc1#
- 2.Qe3#
- 2.Qf3#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Sxe4!
- 1...Kxe5
- 1.Qa5?
- 1...Sxe4
- 2.Sd3#
- 1...fxe5
- 2.Qd2#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Kxe5!
- 1...Sxe4
- 1.Qb7?
- 1...Kxe5
- 2.Qc7#
- 2.Qb8#
- 1...Sxe4
- 2.Qxe4#
- 1...Sxb7
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...fxe5!
- 1...Kxe5
- 1.Qe7?
- 1...fxe5
- 2.Qh4#
- 2.Qg5#
- 1...Sce6
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Sxe4!
- 1...fxe5
- 1.Qg7?
- 1...Kxe5
- 2.Qxg3#
- 2.Qc7#
- 1...fxe5
- 2.Qg4#
- 2.Qg5#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Sxe4!
- 1...Kxe5
- 1.Qh7?
- 1...Kxe5
- 2.Qc7#
- 1...Sxe4
- 2.Sd3#
- 1...Sxh7
- 2.Sg6#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...fxe5!
- 1...Kxe5
- 1.Qa8?
- 1...Kxe5
- 2.Qb8#
- 1...Sxe4
- 2.Qxe4#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Scd7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sfd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...fxe5!
- 1...Kxe5
- 1.Sc4?
- Keys
- 1.Qd7!
- 1...Kxe5
- 2.Qc7#
- 1...Sxe4
- 2.Sd3#
- 1...Scxd7
- 2.Sd3#
- 1...Sfxd7
- 2.Sg6#
- 1...fxe5
- 2.Qd2#
- 1...Sd3
- 2.Sxd3#
- 1...Sb3
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sce6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sh7
- 2.Sg6#
- 1...Kxe5
- 1.Qd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::S(D)
- S(c);N_GUARD::S(D),XS(c)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Tries
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(c);::B(A)
- S(e);::B(A)
- Refutation
- S(c);XP(C)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(c);::B(A)
- S(e);::B(A)
- Refutation
- S(c);XP(C)
- Try
- B(A);CHECK
- Refutation
- K(b);S_FLIGHT,XB(A)
- Try
- B(A);XS(c)
- Threat
- S(D)
- Refutation
- P(d);XS(D)
- Try
- Q(H);
- Vars
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- S(c);XP(C)
- Try
- Q(H);
- Vars
- K(b);S_FLIGHT,XS(D)::QAB(H),XP(a)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- S(c);XP(C)
- Try
- Q(H);
- Vars
- S(c);N_GUARD,XP(C)::S(D)
- P(d);SBLOCK,XS(D)::QAB(H)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- K(b);P_SPINS(c),S_FLIGHT,XS(D)
- Try
- Q(H);
- Vars
- S(c);OGATE,XP(C)::QAR1(H),XS(c)
- S(c);N_GUARD,XQ(H)::S(D)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- P(d);XS(D)
- Try
- Q(H);
- Vars
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(c);N_GUARD::S(D),XS(c)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- S(c);XP(C)
- Try
- Q(H);
- Vars
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- S(c);XP(C)
- Try
- Q(H);
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
- S(c);N_GUARD,XP(C)::S(D)
- S(e);N_GUARD,XQ(H)::S(D)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- P(d);XS(D)
- Try
- Q(H);
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
- S(c);OGATE,XP(C)::QAR1(H),XS(c)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- P(d);XS(D)
- Try
- Actual
- Q(H);
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
- S(c);N_GUARD,XP(C)::S(D)
- S(c);N_GUARD,XQ(H)::S(D)
- S(e);N_GUARD,XQ(H)::S(D)
- P(d);SBLOCK,XS(D)::QAB(H)
- S(c);N_GUARD::S(D),XS(c)
- S(c);N_GUARD::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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