MESON Chess Problem Database
Problem Display
PID: 242699 (2Q1K1B1/3P1P2/2q1kNb1/1p6/1n2NPPB/8/8/8 w - - 0 1)
Hartong, Jan
Tijdschrift vd KNSB, 1955
#2
10 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.d8Q#
- 2.d8R#
- 1...Qd5
- 2.d8S#
- 1...Qb7
- 2.d8S#
- 1...Qxd7+
- 2.Qxd7#
- 1...Qa8
- 2.d8S#
- 1...Qc1
- 2.d8S#
- 1...Qc2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qc4
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Qb6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd6
- 2.d8S#
- 1...Qc7
- 2.d8S#
- 1...Qxc8+
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxe4
- 2.f8Q#
- 2.f8B#
- 1...Bf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bxf7+
- 2.Bxf7#
- 1...Bh7
- 2.f8S#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qxc6#
- 1...Sa6
- 2.Qxc6#
- 1...Qxe4
- Tries
- 1.Be1?
- 1...Qxd7+
- 2.Qxd7#
- 1...Qxc8+
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qxe4
- 2.d8Q#
- 1...Bxe4
- 2.f8Q#
- 1...Qd5
- 2.d8S#
- 1...Qb7
- 2.d8S#
- 1...Qa8
- 2.d8S#
- 1...Qc1
- 2.d8S#
- 1...Qc2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qc4
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Qb6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd6
- 2.d8S#
- 1...Qc7
- 2.d8S#
- 1...Bf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bh7
- 2.f8S#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qxc6#
- 1...Sa6
- 2.Qxc6#
- 1...Bh5!
- 1...Qxd7+
- 1.Bf2?
- 1...Qxd7+
- 2.Qxd7#
- 1...Qxc8+
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qxe4
- 2.d8Q#
- 1...Bxe4
- 2.f8Q#
- 1...Qd5
- 2.d8S#
- 1...Qb7
- 2.d8S#
- 1...Qa8
- 2.d8S#
- 1...Qc1
- 2.d8S#
- 1...Qc2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qc4
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Qb6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd6
- 2.d8S#
- 1...Qc7
- 2.d8S#
- 1...Bf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bh7
- 2.f8S#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qxc6#
- 1...Sa6
- 2.Qxc6#
- 1...Bh5!
- 1...Qxd7+
- 1.Bg5?
- 1...Qxd7+
- 2.Qxd7#
- 1...Qxc8+
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qxe4
- 2.d8Q#
- 2.d8R#
- 1...Bxe4
- 2.f8Q#
- 2.f8B#
- 1...Qd5
- 2.d8S#
- 1...Qb7
- 2.d8S#
- 1...Qa8
- 2.d8S#
- 1...Qc1
- 2.d8S#
- 1...Qc2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qc4
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Qb6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd6
- 2.d8S#
- 1...Qc7
- 2.d8S#
- 1...Bf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bh7
- 2.f8S#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qxc6#
- 1...Sa6
- 2.Qxc6#
- 1...Bh5!
- 1...Qxd7+
- 1.Be1?
- Keys
- 1.Bg3!
- 1...Qxd7+
- 2.Qxd7#
- 1...Qxc8+
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxf7+
- 2.Bxf7#
- 1...Qxe4
- 2.d8Q#
- 1...Bxe4
- 2.f8Q#
- 1...Bh5
- 2.f5#
- 1...Qd5
- 2.d8S#
- 1...Qb7
- 2.d8S#
- 1...Qa8
- 2.d8S#
- 1...Qc1
- 2.d8S#
- 1...Qc2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qc4
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Qb6
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Qd6
- 2.d8S#
- 1...Qc7
- 2.d8S#
- 1...Bf5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Bh7
- 2.f8S#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qxc6#
- 1...Sa6
- 2.Qxc6#
- 1...Qxd7+
- 1.Bg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(c);N_PINP(F),P_PINP(G),XS(A)::P=Q
- Q(c);N_PINP(F),P_PINP(G)::P=S
- Q(c);CHECK,OGATE,P_PINP(G),P_SPINQ(c),XP(F)::QAB1(H),XQ(c)
- Q(c);N_PINP(F),P_PINP(G),P_PINQ(H)::P=S
- Q(c);CHECK,N_PINP(F),P_PINP(G),XQ(H)::PXQ(c)=Q
- B(e);OGATE,XS(A)::P=Q
- B(e);CHECK,OGATE,P_SPINB(e),XP(G)::B(J),XB(e)
- B(e);OGATE::P=S
- S(a);N_GUARD::QAR2(H),XQ(c)
- Tries
- Try
- B(D);
- Vars
- Q(c);CHECK,OGATE,P_PINP(G),P_SPINQ(c),XP(F)::QAB1(H),XQ(c)
- Q(c);CHECK,N_PINP(F),P_PINP(G),XQ(H)::PXQ(c)=Q
- B(e);CHECK,OGATE,P_SPINB(e),XP(G)::B(J),XB(e)
- Q(c);N_PINP(F),P_PINP(G),XS(A)::P=Q
- B(e);OGATE,XS(A)::P=Q
- Q(c);N_PINP(F),P_PINP(G)::P=S
- Q(c);N_PINP(F),P_PINP(G),P_PINQ(H)::P=S
- B(e);OGATE::P=S
- S(a);N_GUARD::QAR2(H),XQ(c)
- Refutation
- B(e);
- Try
- B(D);
- Vars
- Q(c);CHECK,OGATE,P_PINP(G),P_SPINQ(c),XP(F)::QAB1(H),XQ(c)
- Q(c);CHECK,N_PINP(F),P_PINP(G),XQ(H)::PXQ(c)=Q
- B(e);CHECK,OGATE,P_SPINB(e),XP(G)::B(J),XB(e)
- Q(c);N_PINP(F),P_PINP(G),XS(A)::P=Q
- B(e);OGATE,XS(A)::P=Q
- Q(c);N_PINP(F),P_PINP(G)::P=S
- Q(c);N_PINP(F),P_PINP(G),P_PINQ(H)::P=S
- B(e);OGATE::P=S
- S(a);N_GUARD::QAR2(H),XQ(c)
- Refutation
- B(e);
- Try
- B(D);
- Vars
- Q(c);CHECK,OGATE,P_PINP(G),P_SPINQ(c),XP(F)::QAB1(H),XQ(c)
- Q(c);CHECK,N_PINP(F),P_PINP(G),XQ(H)::PXQ(c)=Q
- B(e);CHECK,OGATE,P_SPINB(e),XP(G)::B(J),XB(e)
- Q(c);N_PINP(F),P_PINP(G),XS(A)::P=Q
- B(e);OGATE,XS(A)::P=Q
- Q(c);N_PINP(F),P_PINP(G)::P=S
- Q(c);N_PINP(F),P_PINP(G),P_PINQ(H)::P=S
- B(e);OGATE::P=S
- S(a);N_GUARD::QAR2(H),XQ(c)
- Refutation
- B(e);
- Try
- Actual
- B(D);
- Vars
- Q(c);CHECK,OGATE,P_PINP(G),P_SPINQ(c),XP(F)::QAB1(H),XQ(c)
- Q(c);CHECK,N_PINP(F),P_PINP(G),XQ(H)::PXQ(c)=Q
- B(e);CHECK,OGATE,P_SPINB(e),XP(G)::B(J),XB(e)
- Q(c);N_PINP(F),P_PINP(G),XS(A)::P=Q
- B(e);OGATE,XS(A)::P=Q
- B(e);N_GUARD::P(B)
- Q(c);N_PINP(F),P_PINP(G)::P=S
- Q(c);N_PINP(F),P_PINP(G),P_PINQ(H)::P=S
- B(e);OGATE::P=S
- S(a);N_GUARD::QAR2(H),XQ(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).