MESON Chess Problem Database
Problem Display
PID: 227584 (2B5/2n1nK2/1QpkpB2/8/p2N4/P1N5/8/8 w - - 0 1)
Levman, Semyon Semyonovich
Arbeiter Schachzeitung, 1926
#2
7 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sb5
- 2.Sdxb5#
- 1...Scd5
- 2.Se4#
- 2.Scb5#
- 2.Sdb5#
- 1...Sa6
- 2.Sdb5#
- 1...Sa8
- 2.Sdb5#
- 1...Se8
- 2.Sdb5#
- 1...Sed5
- 2.Se4#
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sxc8
- 2.Qxc6#
- 1...Sg8
- 2.Qxc6#
- 1...e5
- 2.Bxe7#
- 1...Sb5
- Tries
- 1.Kf8?
- 1...Sxc8
- 2.Qxc6#
- 1...Sb5
- 2.Sdxb5#
- 1...Scd5
- 2.Se4#
- 2.Scb5#
- 2.Sdb5#
- 1...Sa6
- 2.Sdb5#
- 1...Sa8
- 2.Sdb5#
- 1...Se8
- 2.Sdb5#
- 1...Sed5
- 2.Se4#
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Sg8
- 2.Qxc6#
- 1...e5
- 2.Bxe7#
- 1...Sg6+!
- 1...Sxc8
- 1.Sxa4?
- threat
- 2.Qc5#
- 1...Sxc8
- 2.Qxc6#
- 1...Sb5
- 2.Qd8#
- 1...Scd5
- 2.Sb5#
- 2.Qd8#
- 1...Sa6
- 2.Qd8#
- 1...Sa8
- 2.Qd8#
- 1...Se8
- 2.Qd8#
- 1...Kd5!
- threat
- 1.Sxe6?
- threat
- 2.Qc5#
- 2.Qxc7#
- 1...Sxc8
- 2.Qxc7#
- 1...Sb5
- 2.Qc5#
- 2.Qd8#
- 1...Scd5
- 2.Se4#
- 2.Sb5#
- 2.Qc5#
- 2.Qd8#
- 1...Sa6
- 2.Qd8#
- 1...Sa8
- 2.Qc5#
- 2.Qd8#
- 1...Se8
- 2.Qc5#
- 2.Qd8#
- 1...Sed5
- 2.Se4#
- 2.Qc5#
- 1...Sxe6!
- threat
- 1.Bg7?
- 1...Sxc8
- 2.Qxc6#
- 1...Sb5
- 2.Sdxb5#
- 1...Scd5
- 2.Se4#
- 2.Scb5#
- 2.Sdb5#
- 1...Sa6
- 2.Sdb5#
- 1...Sa8
- 2.Sdb5#
- 1...Se8
- 2.Sdb5#
- 1...Sed5
- 2.Se4#
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sg8
- 2.Qxc6#
- 1...e5!
- 1...Sxc8
- 1.Bh8?
- 1...Sxc8
- 2.Qxc6#
- 1...Sb5
- 2.Sdxb5#
- 1...Scd5
- 2.Se4#
- 2.Scb5#
- 2.Sdb5#
- 1...Sa6
- 2.Sdb5#
- 1...Sa8
- 2.Sdb5#
- 1...Se8
- 2.Sdb5#
- 1...Sed5
- 2.Se4#
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sg8
- 2.Qxc6#
- 1...e5!
- 1...Sxc8
- 1.Kf8?
- Keys
- 1.Qb7!
- 1...Kc5
- 2.Qb4#
- 1...Sxc8
- 2.Qxc6#
- 1...Sb5
- 2.Qxe7#
- 1...Scd5
- 2.Se4#
- 1...Sa6
- 2.Qxe7#
- 1...Sa8
- 2.Qxe7#
- 1...Se8
- 2.Qxe7#
- 1...Sed5
- 2.Se4#
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sg8
- 2.Qxc6#
- 1...c5
- 2.Se4#
- 1...e5
- 2.Bxe7#
- 1...Kc5
- 1.Qb7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(f);N_GUARD::QAR1(D),XP(b)
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- P(d);SBLOCK::B(E),XS(f)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(f);N_GUARD::QAR1(D),XP(b)
- P(d);SBLOCK::B(E),XS(f)
- Refutation
- S(f);CHECK
- Try
- S(B);XP(a)
- Threat
- QAB1(D)
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- S(e);OGATE::QAR2(D)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- S(C);XP(d)
- Threat
- DUALS(2)
- Vars
- S(f);XB(G)::QAB1(D),XS(e)
- S(e);OGATE::QAR2(D)
- Refutation
- S(e);XS(C)
- Try
- B(E);
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(f);N_GUARD::QAR1(D),XP(b)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- S(e);N_GUARD::S(C),XS(e)
- S(e);N_GUARD::S(C)
- S(f);N_GUARD::QAR1(D),XP(b)
- Refutation
- P(d);
- Try
- Actual
- Q(D);N_PINP(b)
- Vars
- K(c);S_FLIGHT::QAB1(D)
- S(f);N_GUARD,XB(G)::QAR1(D),XP(b)
- S(e);OGATE::QAB1(D),XS(f)
- S(e);SBLOCK::S(B)
- S(f);N_GUARD::QAR1(D),XP(b)
- P(b);::S(B)
- P(d);SBLOCK::B(E),XS(f)
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).