MESON Chess Problem Database
Problem Display
PID: 207441 (2B5/4Q1b1/4n3/nR1b4/R1p1kB2/1N5N/3P2P1/3K4 w - - 0 1)
Fenner, A Jack
The Problemist, 1984
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Kd3
- 2.Sf2#
- 1...Kf5
- 2.Qxe6#
- 1...Ba1
- 2.Qh7#
- 1...Bb2
- 2.Qh7#
- 1...Bc3
- 2.Qh7#
- 1...Bd4
- 2.Qh7#
- 1...Be5
- 2.Qh7#
- 1...Bf6
- 2.Qh7#
- 1...Bh6
- 2.Qh7#
- 1...Bf8
- 2.Qh7#
- 1...Bh8
- 2.Qh7#
- 1...Kd3
- Tries
- 1.Sc5+?
- 1...Kf5
- 2.Qg5#
- 1...Kd4!
- 1...Kf5
- 1.Sf2+?
- 1...Kf5
- 2.Qg5#
- 1...Kxf4!
- 1...Kf5
- 1.Qg5?
- threat
- 2.Sf2#
- 2.Qxd5#
- 2.Qg6#
- 1...Kd3
- 2.Sf2#
- 1...Sxb3
- 2.Qxd5#
- 1...Sxf4
- 2.Sf2#
- 2.Qf5#
- 1...Bc6
- 2.Sf2#
- 2.Qf5#
- 2.Qg6#
- 1...Bb7
- 2.Sf2#
- 2.Qf5#
- 2.Qg6#
- 1...Ba8
- 2.Sf2#
- 2.Qf5#
- 2.Qg6#
- 1...Bd4
- 2.Qg6#
- 1...Be5
- 2.Sf2#
- 2.Qg6#
- 1...Sd4
- 2.Sc5#
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Sc7
- 2.Sf2#
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Sf8
- 2.Sf2#
- 2.Bf5#
- 2.Qxd5#
- 2.Qf5#
- 1...Sxg5!
- threat
- 1.Qf6?
- threat
- 2.Sf2#
- 2.Qg6#
- 1...Kd3
- 2.Sf2#
- 1...Sxb3
- 2.Sf2#
- 1...Sxf4
- 2.Sc5#
- 2.Sf2#
- 2.Bf5#
- 2.Qf5#
- 1...Sd4
- 2.Sc5#
- 2.Sf2#
- 1...Sf8
- 2.Sc5#
- 2.Sf2#
- 2.Bf5#
- 2.Qf5#
- 1...Bxf6!
- threat
- 1.Qxe6+?
- 1...Kd3
- 2.Sf2#
- 2.Qe2#
- 2.Qe3#
- 1...Be5
- 2.Qxd5#
- 2.Qf5#
- 2.Qg6#
- 1...Bxe6!
- 1...Kd3
- 1.Qf7?
- threat
- 2.Sf2#
- 2.Qg6#
- 1...Kd3
- 2.Sf2#
- 1...Sxf4
- 2.Qf5#
- 1...Bf6
- 2.Qg6#
- 2.Qh7#
- 1...Bd4
- 2.Qg6#
- 2.Qh7#
- 1...Sd4
- 2.Sc5#
- 2.Sf2#
- 1...Sf8
- 2.Sf2#
- 2.Bf5#
- 2.Qxd5#
- 2.Qf5#
- 1...Sxb3!
- threat
- 1.Qe8?
- threat
- 2.Qg6#
- 1...Kd3
- 2.Sf2#
- 1...Kf5
- 2.Qxe6#
- 1...Sxb3!
- threat
- 1.d3+?
- 1...Kf5
- 2.Qg5#
- 2.Qxe6#
- 1...Kxd3!
- 1...Kf5
- 1.Sc5+?
- Keys
- 1.Qd7!
- threat
- 2.Qxd5#
- 1...Kd3
- 2.Sf2#
- 1...Kf5
- 2.Qxe6#
- 1...Sxf4
- 2.Qf5#
- 1...Bc6
- 2.d3#
- 1...Bb7
- 2.d3#
- 1...Ba8
- 2.d3#
- 1...Bd4
- 2.Qh7#
- 1...Be5
- 2.Qh7#
- 1...Sd4
- 2.Sc5#
- 1...Sc5
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT::S(E)
- K(b);N_SPINP(a),P_SPINB(d),S_FLIGHT::QAB1(I),XS(e)
- B(f);OGATE::QAB(I)
- B(f);N_SPINP(a),OGATE::QAB(I)
- B(f);N_SPINS(e),OGATE::QAB(I)
- Tries
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINP(a),S_FLIGHT::QAR1(I)
- Refutation
- K(b);N_SPINS(e),P-FLIGHT
- Try
- S(E);CHECK
- Vars
- K(b);N_SPINP(a),P_SPINB(d),S_FLIGHT::QAR1(I)
- Refutation
- K(b);N_SPINS(e),P-FLIGHT,XB(G)
- Try
- Q(I);N_PINS(e)
- Threat
- DUALS(3)
- Vars
- K(b);N_SPINP(a),S_FLIGHT::S(E)
- S(c);XS(D)::QAB1(I),XB(d)
- B(f);N_SPINP(a)::QAB(I)
- Refutation
- S(e);XQ(I)
- Try
- Q(I);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- K(b);N_SPINP(a),S_FLIGHT::S(E)
- S(c);XS(D)::S(E)
- Refutation
- B(f);XQ(I)
- Try
- Q(I);CHECK,XS(e)
- Refutation
- B(d);XQ(I)
- Try
- Q(I);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- K(b);N_SPINP(a),S_FLIGHT::S(E)
- S(e);XB(G)::QAB1(I)
- Refutation
- S(c);XS(D)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT::S(E)
- K(b);N_SPINP(a),P_SPINB(d),S_FLIGHT::QAB1(I),XS(e)
- Refutation
- S(c);XS(D)
- Try
- P(B);CHECK
- Refutation
- K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT,XP(B)
- Try
- Actual
- Q(I);N_PINS(e)
- Threat
- QAB1(I),XB(d)
- Vars
- K(b);N_SPINP(a),P_SPINB(d),S_FLIGHT::S(E)
- K(b);N_SPINP(a),P_SPINB(d),P_SPINS(e),S_FLIGHT::QAB1(I),XS(e)
- S(e);OGATE,XB(G)::QAB1(I)
- B(d);::P(B)
- B(f);N_SPINP(a),OGATE::QAB(I)
- B(f);OGATE::QAB(I)
- S(e);N_GUARD,N_SPINP(a),SBLOCK::S(D)
- S(e);OGATE::QAB1(I)
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).