MESON Chess Problem Database
Problem Display
PID: 227689 (8/8/2B5/1Qn5/8/k7/8/1Kb5 w - - 0 1)
Schiffert, Gyorgy
Magyar Sakkvilag, 1926
#2
3 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Qb2#
- 1...Be3
- 2.Qb2#
- 1...Bf4
- 2.Qb2#
- 1...Bg5
- 2.Qb2#
- 1...Bh6
- 2.Qb2#
- 1...Sb3
- 2.Qa4#
- 1...Sd3
- 2.Qa4#
- 1...Sa4
- 2.Qxa4#
- 1...Se4
- 2.Qa4#
- 1...Sa6
- 2.Qa4#
- 1...Se6
- 2.Qa4#
- 1...Sb7
- 2.Qa4#
- 1...Sd7
- 2.Qa4#
- 1...Bb2
- Tries
- 1.Ka1?
- 1...Bb2+
- 2.Qxb2#
- 1...Bd2
- 2.Qb2#
- 1...Be3
- 2.Qb2#
- 1...Bf4
- 2.Qb2#
- 1...Bg5
- 2.Qb2#
- 1...Bh6
- 2.Qb2#
- 1...Sd3
- 2.Qa4#
- 1...Sa4
- 2.Qxa4#
- 1...Se4
- 2.Qa4#
- 1...Sa6
- 2.Qa4#
- 1...Se6
- 2.Qa4#
- 1...Sb7
- 2.Qa4#
- 1...Sd7
- 2.Qa4#
- 1...Sb3+!
- 1...Bb2+
- 1.Kc2?
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Qb2#
- 1...Be3
- 2.Qb2#
- 1...Bf4
- 2.Qb2#
- 1...Bg5
- 2.Qb2#
- 1...Bh6
- 2.Qb2#
- 1...Sb3
- 2.Qa4#
- 2.Qxb3#
- 1...Sd3
- 2.Qa4#
- 2.Qb3#
- 2.Qa5#
- 1...Sa4
- 2.Qxa4#
- 2.Qb3#
- 1...Se4
- 2.Qa4#
- 2.Qb3#
- 2.Qa5#
- 1...Sa6
- 2.Qa4#
- 2.Qb3#
- 2.Qa5#
- 1...Se6
- 2.Qa4#
- 2.Qb3#
- 2.Qa5#
- 1...Sb7
- 2.Qa4#
- 2.Qb3#
- 1...Sd7
- 2.Qa4#
- 2.Qb3#
- 2.Qa5#
- 1...Ka2!
- 1...Bb2
- 1.Bd7?
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Qb2#
- 1...Be3
- 2.Qb2#
- 1...Bf4
- 2.Qb2#
- 1...Bg5
- 2.Qb2#
- 1...Bh6
- 2.Qb2#
- 1...Sb3
- 2.Qa4#
- 1...Sd3
- 2.Qa4#
- 1...Sa4
- 2.Qxa4#
- 1...Se4
- 2.Qa4#
- 1...Sa6
- 2.Qa4#
- 1...Se6
- 2.Qa4#
- 1...Sb7
- 2.Qa4#
- 1...Sxd7!
- 1...Bb2
- 1.Be8?
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Qb2#
- 1...Be3
- 2.Qb2#
- 1...Bf4
- 2.Qb2#
- 1...Bg5
- 2.Qb2#
- 1...Bh6
- 2.Qb2#
- 1...Sb3
- 2.Qa4#
- 1...Sd3
- 2.Qa4#
- 1...Sa4
- 2.Qxa4#
- 1...Se4
- 2.Qa4#
- 1...Sa6
- 2.Qa4#
- 1...Se6
- 2.Qa4#
- 1...Sb7
- 2.Qa4#
- 1...Sd7!
- 1...Bb2
- 1.Ka1?
- Keys
- 1.Qa5+!
- 1...Kb3
- 2.Bd5#
- 1...Sa4
- 2.Qxa4#
- 1...Kb3
- 1.Qa5+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- B(a);N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD::QAB1(B)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- B(a);CHECK,N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD::QAB1(B)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Refutation
- S(c);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- B(a);N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD::QAB1(B)
- Refutation
- K(b);P-FLIGHT
- Try
- B(C);
- Vars
- B(a);N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD::QAB1(B)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Refutation
- S(c);XB(C)
- Try
- B(C);
- Vars
- B(a);N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD::QAB1(B)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Refutation
- S(c);
- Try
- Actual
- Q(B);CHECK
- Vars
- K(b);P-FLIGHT::B(C)
- S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
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).