MESON Chess Problem Database
Problem Display
PID: 206472 (8/1pQ5/1n1p4/1P1Bb3/4Pp2/1PPknR2/4N3/2K3N1 w - - 0 1)
Nanning, Willem
De Maasbode, 1925
#2
10 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxc3
- 2.Qxc3#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sxd5
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Bxc3
- Tries
- 1.Sh3?
- 1...Bxc3
- 2.Shxf4#
- 1...Sxd5
- 2.Qc4#
- 1...Bd4
- 2.Sexf4#
- 2.Shxf4#
- 1...Bf6
- 2.Sexf4#
- 2.Shxf4#
- 1...Bg7
- 2.Sexf4#
- 2.Shxf4#
- 1...Bh8
- 2.Sexf4#
- 2.Shxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Kxe2!
- 1...Bxc3
- 1.Bc4+?
- 1...Sxc4
- 2.Qxc4#
- 1...Kxe4!
- 1...Sxc4
- 1.Bxb7?
- 1...Bxc3
- 2.Qxc3#
- 1...Sd5
- 2.Qc4#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...d5!
- 1...Bxc3
- 1.Rh3?
- 1...Bxc3
- 2.Qxc3#
- 1...Sxd5
- 2.Qc4#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...f3!
- 1...Bxc3
- 1.Qc5?
- 1...Bxc3
- 2.Sxf4#
- 2.Qxc3#
- 1...Sxd5
- 2.Qc4#
- 1...Bd4
- 2.Sxf4#
- 2.Qxd4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...dxc5!
- 1...Bxc3
- 1.Qc6?
- 1...Bxc3
- 2.Qxc3#
- 1...Sxd5
- 2.Qc4#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Bc4#
- 2.Qc4#
- 1...Sc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Sd7
- 2.Bc4#
- 2.Qc4#
- 1...Sa8
- 2.Bc4#
- 2.Qc4#
- 1...Sc8
- 2.Bc4#
- 2.Qc4#
- 1...bxc6!
- 1...Bxc3
- 1.Qc8?
- 1...Bxc3
- 2.Qxc3#
- 1...Sxd5
- 2.Qc4#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sxc8!
- 1...Bxc3
- 1.b4?
- 1...Bxc3
- 2.Qxc3#
- 1...Bd4
- 2.Sxf4#
- 1...Bf6
- 2.Sxf4#
- 1...Bg7
- 2.Sxf4#
- 1...Bh8
- 2.Sxf4#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Sxd5!
- 1...Bxc3
- 1.Sh3?
- Keys
- 1.Qh7!
- 1...Bxc3
- 2.e5#
- 1...Sxd5
- 2.exd5#
- 1...Bd4
- 2.e5#
- 1...Bf6
- 2.e5#
- 1...Bg7
- 2.e5#
- 1...Bh8
- 2.e5#
- 1...Sa4
- 2.Bc4#
- 1...Sc4
- 2.Bxc4#
- 1...Sd7
- 2.Bc4#
- 1...Sa8
- 2.Bc4#
- 1...Sc8
- 2.Bc4#
- 1...Bxc3
- 1.Qh7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(e);N_GUARD,XB(I)::QAB1(J)
- Tries
- Try
- S(B);
- Vars
- B(d);N_GUARD,XP(E)::S(B),XP(c)
- S(e);N_GUARD,XB(I)::QAB1(J)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- K(a);N_SPINS(b),S_FLIGHT,XS(C)
- Try
- B(I);CHECK
- Vars
- S(e);OGATE,XB(I)::QAB1(J),XS(e)
- Refutation
- K(a);N_SPINS(b),S_FLIGHT,XP(G)
- Try
- B(I);XP(g)
- Vars
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- S(e);N_GUARD::QAB1(J)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- P(f);
- Try
- R(F);
- Vars
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- S(e);N_GUARD,XB(I)::QAB1(J)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- P(c);N_SPINS(b)
- Try
- Q(J);
- Vars
- S(e);N_GUARD,XB(I)::QAB1(J)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- P(f);XQ(J)
- Try
- Q(J);
- Vars
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- S(e);N_GUARD,XB(I)::QAB1(J)
- B(d);N_GUARD::S(C),XP(c)
- Refutation
- P(g);XQ(J)
- Try
- Q(J);
- Vars
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- S(e);N_GUARD,XB(I)::QAB1(J)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- S(e);XQ(J)
- Try
- P(D);
- Vars
- B(d);OGATE,XP(E)::QAR1(J),XB(d)
- B(d);N_GUARD::S(C),XP(c)
- S(e);N_GUARD::QAB1(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- Refutation
- S(e);XB(I)
- Try
- Actual
- Q(J);
- Vars
- B(d);OGATE,XP(E)::QAB(J)+P(G)
- S(e);OGATE,XB(I)::QAB(J)+P(G),XS(e)
- B(d);OGATE::QAB(J)+P(G)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
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).