MESON Chess Problem Database
Problem Display
PID: 234652 (8/8/8/3p2K1/4k1N1/Q2n4/6R1/8 w - - 0 1)
Lincoln, Robert A
Kudesnik, 2007
#2
4 + 3
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Sc1
- Tries
- 1.Rg1?
- 1...Kf3
- 2.Qxd3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Kf3
- 1.Ra2?
- 1...Kf3
- 2.Qxd3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Kf3
- 1.Rb2?
- 1...Kf3
- 2.Qxd3#
- 1...Sxb2
- 2.Qe3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Kf3
- 1.Rc2?
- 1...Kf3
- 2.Qxd3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Kf3
- 1.Re2+?
- 1...Kf3
- 2.Qxd3#
- 1...Kd4!
- 1...Kf3
- 1.Rf2?
- 1...Sxf2
- 2.Qe3#
- 1...Sc1
- 2.Rf4#
- 2.Qe3#
- 1...Se1
- 2.Rf4#
- 2.Qe3#
- 1...Sb2
- 2.Rf4#
- 2.Qe3#
- 1...Sb4
- 2.Rf4#
- 2.Qe3#
- 1...Sf4
- 2.Rxf4#
- 2.Qe3#
- 1...Sc5
- 2.Rf4#
- 2.Qe3#
- 1...Se5
- 2.Rf4#
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Sxf2
- 1.Rh2?
- 1...Kf3
- 2.Qxd3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- 1...Kf3
- 1.Rg3?
- threat
- 2.Qxd3#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qa8#
- 1...Kd4!
- threat
- 1.Qc5?
- threat
- 2.Qe3#
- 1...Kf3
- 2.Qxd5#
- 1...d4
- 2.Qf5#
- 2.Qc6#
- 1...Sxc5!
- threat
- 1.Qb3?
- 1...Kf3
- 2.Qxd5#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...d4
- 2.Qb7#
- 1...Kd4!
- 1...Kf3
- 1.Qc3?
- 1...d4
- 2.Qc6#
- 1...Sc1
- 2.Sf2#
- 2.Sf6#
- 2.Qe3#
- 1...Se1
- 2.Sf2#
- 2.Sf6#
- 2.Re2#
- 2.Qe3#
- 1...Sb2
- 2.Sf2#
- 2.Sf6#
- 2.Re2#
- 2.Qe3#
- 1...Sf2
- 2.Sxf2#
- 2.Sf6#
- 2.Qe3#
- 1...Sb4
- 2.Sf2#
- 2.Sf6#
- 2.Re2#
- 2.Qe3#
- 1...Sf4
- 2.Sf2#
- 2.Sf6#
- 2.Qe3#
- 1...Sc5
- 2.Sf2#
- 2.Sf6#
- 2.Re2#
- 2.Qe3#
- 1...Se5
- 2.Sf2#
- 2.Sf6#
- 2.Re2#
- 2.Qe3#
- 1...Kf3!
- 1...d4
- 1.Rg1?
- Keys
- 1.Rd2!
- threat
- 2.Qxd3#
- 1...Kf3
- 2.Qxd3#
- 1...Kd4
- 2.Qb4#
- 1...Sc1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sb4
- 2.Qe3#
- 1...Sf4
- 2.Qe3#
- 1...Sc5
- 2.Qe3#
- 1...Se5
- 2.Sf2#
- 2.Sf6#
- 2.Qe3#
- 1...d4
- 2.Qa8#
- threat
- 1.Rd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Tries
- Try
- R(A);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- S(a);OGATE,XR(A)::QAR1(B)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);CHECK
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Vars
- S(a);OGATE,XR(A)::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- R(A);
- Threat
- QAB1(B),XS(a)
- Vars
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- K(b);S_FLIGHT::QAB(B),XP(c)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAB(B),XP(c)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);
- Vars
- P(c);OGATEB,SBLOCK::QAB(B)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- Actual
- R(A);
- Threat
- QAB1(B),XS(a)
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B),XS(a)
- K(b);P-FLIGHT,P_SPINS(a)::QAR2(B)
- S(a);OGATE::QAR1(B)
- P(c);OGATEB,SBLOCK::QAB(B)
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).