MESON Chess Problem Database
Problem Display
PID: 110747 (n2K2n1/1p6/b3Q3/N1kp4/pR6/2B5/8/8 w - - 0 1)
Gevers, Raymond
Die Datsel, 1929
#2
5 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Sxb7#
- 1...Be2
- 2.Sxb7#
- 1...Bd3
- 2.Sxb7#
- 1...Bc4
- 2.Sxb7#
- 1...Bb5
- 2.Sxb7#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Sf6
- 2.Qe7#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...a3
- 2.Sb3#
- 1...d4
- 2.Qe5#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Bf1
- Tries
- 1.Sc6?
- threat
- 2.Bd4#
- 1...d4
- 2.Bxd4#
- 1...bxc6!
- threat
- 1.Be1?
- 1...Bf1
- 2.Sxb7#
- 1...Be2
- 2.Sxb7#
- 1...Bd3
- 2.Sxb7#
- 1...Bb5
- 2.Sxb7#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Sf6
- 2.Qe7#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...a3
- 2.Sb3#
- 1...d4
- 2.Qe5#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Bc4!
- 1...Bf1
- 1.Bd2?
- 1...Bf1
- 2.Sxb7#
- 1...Be2
- 2.Sxb7#
- 1...Bd3
- 2.Sxb7#
- 1...Bb5
- 2.Sxb7#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Sf6
- 2.Qe7#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...a3
- 2.Sb3#
- 1...d4
- 2.Qe5#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Bc4!
- 1...Bf1
- 1.Be5?
- threat
- 2.Bd6#
- 2.Qd6#
- 1...Bc4
- 2.Qd6#
- 1...Bb5
- 2.Qd6#
- 1...b5
- 2.Qd6#
- 1...Kxb4!
- threat
- 1.Qc8+?
- 1...Sc7
- 2.Qxc7#
- 1...Kd6!
- 1...Sc7
- 1.Qe3+?
- 1...d4
- 2.Qxd4#
- 2.Qe5#
- 1...Kd6!
- 1...d4
- 1.Qf6?
- 1...d4
- 2.Qxd4#
- 2.Qe5#
- 1...Bf1
- 2.Sxb7#
- 1...Be2
- 2.Sxb7#
- 1...Bd3
- 2.Sxb7#
- 1...Bc4
- 2.Sxb7#
- 1...Bb5
- 2.Sxb7#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Sh6
- 2.Qe7#
- 2.Qf8#
- 1...Se7
- 2.Qxe7#
- 1...a3
- 2.Sb3#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Sxf6!
- 1...d4
- 1.Sc6?
- Keys
- 1.Qd7!
- 1...Bb5
- 2.Rxb5#
- 1...b5
- 2.Qc6#
- 1...Bf1
- 2.Sxb7#
- 1...Be2
- 2.Sxb7#
- 1...Bd3
- 2.Sxb7#
- 1...Bc4
- 2.Sxb7#
- 1...Sb6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Sf6
- 2.Qe7#
- 1...Sh6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...a3
- 2.Sb3#
- 1...d4
- 2.Qxd4#
- 1...b6
- 2.Qc6#
- 1...Bb5
- 1.Qd7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD::S(C),XP(e)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::QAB(D)
- S(g);N_GUARD::QAB(D),XS(g)
- P(a);N_GUARD::S(C)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD::QAR1(D)
- Tries
- Try
- S(C);
- Threat
- B(A)
- Vars
- P(c);::B(A),XP(c)
- Refutation
- P(e);XS(C)
- Try
- B(A);
- Vars
- B(d);N_GUARD::S(C),XP(e)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::QAB(D)
- S(g);N_GUARD::QAB(D),XS(g)
- P(a);N_GUARD::S(C)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD::QAR1(D)
- Refutation
- B(d);
- Try
- B(A);
- Vars
- B(d);N_GUARD::S(C),XP(e)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::QAB(D)
- S(g);N_GUARD::QAB(D),XS(g)
- P(a);N_GUARD::S(C)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD::QAR1(D)
- Refutation
- B(d);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- B(d);::QAB1(D)
- P(e);::QAB1(D)
- Refutation
- K(b);S_FLIGHT,XR(B)
- Try
- Q(D);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR2(D),XS(f)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(D);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Q(D);
- Vars
- B(d);N_GUARD::S(C),XP(e)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::QAB(D),XS(g)
- P(a);N_GUARD::S(C)
- P(e);N_GUARD::QAR1(D)
- Refutation
- S(g);XQ(D)
- Try
- Actual
- Q(D);
- Vars
- B(d);N_GUARD::R1(B),XB(d)
- P(e);N_GUARD::QAR1(D)
- B(d);N_GUARD::S(C),XP(e)
- S(f);N_GUARD::QAR2(D)
- S(f);N_GUARD::QAR2(D),XS(f)
- S(g);N_GUARD::QAB(D)
- S(g);N_GUARD::QAB(D),XS(g)
- P(a);N_GUARD::S(C)
- P(c);OGATE::QAB1(D),XP(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).