MESON Chess Problem Database
Problem Display
PID: 68444 (2Q5/3N4/4n3/5k2/6RK/3b4/8/8 w - - 0 1)
Lincoln, Robert A
Problem Observer, 2006
#2
4 + 3
SOLUTION
- SOUND
- Sets
- 1...Bc2
- 2.Qxc2#
- 1...Bc2
- Tries
- 1.Sc5?
- threat
- 2.Qxe6#
- 1...Ke5
- 2.Qxe6#
- 1...Kf6
- 2.Qxe6#
- 1...Bc4!
- threat
- 1.Sf8?
- threat
- 2.Qxe6#
- 1...Ke5
- 2.Qxe6#
- 1...Kf6
- 2.Qxe6#
- 1...Bc4!
- threat
- 1.Qc3?
- threat
- 2.Qe5#
- 2.Qf6#
- 2.Qxd3#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 2.Qf6#
- 1...Sg5
- 2.Qf6#
- 1...Sc7
- 2.Qe5#
- 2.Qf6#
- 1...Sg7
- 2.Qe5#
- 2.Qf6#
- 1...Sd8
- 2.Qe5#
- 2.Qf6#
- 1...Sf8
- 2.Qe5#
- 2.Qf6#
- 1...Bc4
- 2.Qe5#
- 2.Qf6#
- 1...Bb1
- 2.Qe5#
- 2.Qf6#
- 1...Bf1
- 2.Qe5#
- 2.Qf6#
- 1...Bc2
- 2.Qe5#
- 2.Qf6#
- 2.Qxc2#
- 1...Be2
- 2.Qe5#
- 2.Qf6#
- 1...Be4
- 2.Qe5#
- 2.Qf6#
- 1...Bb5
- 2.Qe5#
- 2.Qf6#
- 1...Ba6
- 2.Qe5#
- 2.Qf6#
- 1...Sd4!
- threat
- 1.Qc4?
- threat
- 2.Qxd3#
- 2.Qd5#
- 1...Sg5
- 2.Rxg5#
- 1...Bb1
- 2.Qd5#
- 1...Bf1
- 2.Qd5#
- 2.Qe4#
- 1...Bc2
- 2.Qd5#
- 2.Qxc2#
- 1...Be2
- 2.Qd5#
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Sd4
- 2.Qd5#
- 2.Qf7#
- 1...Sf4
- 2.Rg5#
- 1...Sc5
- 2.Rg5#
- 2.Qd5#
- 2.Qf7#
- 1...Sc7
- 2.Rg5#
- 2.Qf7#
- 1...Sg7
- 2.Rg5#
- 2.Qd5#
- 2.Qf7#
- 1...Sd8
- 2.Rg5#
- 2.Qd5#
- 1...Sf8
- 2.Rg5#
- 2.Qd5#
- 2.Qf7#
- 1...Bxc4!
- threat
- 1.Qe8?
- threat
- 2.Qg6#
- 2.Qf7#
- 1...Sf4
- 2.Rg5#
- 2.Qe5#
- 1...Sd8
- 2.Qg6#
- 2.Qe5#
- 1...Sf8
- 2.Qf7#
- 2.Qe5#
- 1...Sg5!
- threat
- 1.Qh8?
- threat
- 2.Qe5#
- 2.Qf6#
- 2.Qh7#
- 1...Sd4
- 2.Qe5#
- 2.Qf6#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 2.Qf6#
- 1...Sg5
- 2.Qf6#
- 1...Sc7
- 2.Qe5#
- 2.Qf6#
- 1...Sd8
- 2.Qe5#
- 2.Qf6#
- 1...Sf8
- 2.Qe5#
- 2.Qf6#
- 1...Sg7!
- threat
- 1.Sc5?
- Keys
- 1.Qc6!
- threat
- 2.Qd5#
- 1...Bc4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Sf4
- 2.Rg5#
- 1...Sg5
- 2.Qf6#
- 1...Sc7
- 2.Qf6#
- 2.Qg6#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(a);OGATEB::QAB(D),XB(a)
- Tries
- Try
- S(C);P_PINS(c)
- Threat
- QAB1(D),XS(c)
- Vars
- K(b);N_SPINS(c),P-FLIGHT::QAR1(D),XS(c)
- Refutation
- B(a);
- Try
- S(C);P_PINS(c)
- Threat
- QAB1(D),XS(c)
- Vars
- K(b);N_SPINS(c),P-FLIGHT::QAR1(D),XS(c)
- Refutation
- B(a);
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- S(c);::QAR1(D)
- Refutation
- S(c);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD::R1(A),XS(c)
- B(a);::QAR2(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(c);N_GUARD::R1(A)
- Refutation
- B(a);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Refutation
- S(c);
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- S(c);::QAR1(D)
- Refutation
- S(c);
- Try
- Actual
- Q(D);
- Threat
- QAR2(D)
- Vars
- B(a);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(c);N_GUARD,SBLOCK::R1(A)
- S(c);OGATE::QAR1(D)
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).