MESON Chess Problem Database
Problem Display
PID: 234637 (kr6/3N4/K1P5/1p6/8/8/Q7/8 w - - 0 1)
Lincoln, Robert A
Kudesnik, 2005
#2
4 + 3
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb6+
- 2.Kxb6#
- 1...Rb7
- 2.cxb7#
- 1...Rc8
- 2.Kxb5#
- 2.Kb6#
- 1...Rd8
- 2.Kxb5#
- 2.Kb6#
- 1...Re8
- 2.Kxb5#
- 2.Kb6#
- 1...Rf8
- 2.Kxb5#
- 2.Kb6#
- 1...Rg8
- 2.Kxb5#
- 2.Kb6#
- 2.Qxg8#
- 1...Rh8
- 2.Kxb5#
- 2.Kb6#
- 1...Rb6+
- Tries
- 1.Qg8?
- threat
- 2.Sb6#
- 2.Qxb8#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qxd8#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rxg8!
- threat
- 1.Qa1?
- 1...Rb6+
- 2.Kxb6#
- 1...Rb7
- 2.cxb7#
- 1...Rc8
- 2.Kxb5#
- 2.Kb6#
- 1...Rd8
- 2.Kxb5#
- 2.Kb6#
- 1...Re8
- 2.Kxb5#
- 2.Kb6#
- 1...Rf8
- 2.Kxb5#
- 2.Kb6#
- 1...Rg8
- 2.Kxb5#
- 2.Kb6#
- 1...Rh8
- 2.Kxb5#
- 2.Kb6#
- 2.Qxh8#
- 1...b4!
- 1...Rb6+
- 1.Qf2?
- threat
- 2.Qa7#
- 1...Rb7
- 2.cxb7#
- 1...Rb6+!
- threat
- 1.Qa3?
- 1...Rb6+
- 2.Kxb6#
- 1...Rb7
- 2.cxb7#
- 1...Rc8
- 2.Kxb5#
- 2.Kb6#
- 1...Rd8
- 2.Kxb5#
- 2.Kb6#
- 1...Re8
- 2.Kxb5#
- 2.Kb6#
- 1...Rf8
- 2.Kxb5#
- 2.Kb6#
- 2.Qxf8#
- 1...Rg8
- 2.Kxb5#
- 2.Kb6#
- 1...Rh8
- 2.Kxb5#
- 2.Kb6#
- 1...b4!
- 1...Rb6+
- 1.Qa5?
- 1...Rb6+
- 2.Kxb6#
- 1...Rb7
- 2.cxb7#
- 1...Rc8
- 2.Kxb5#
- 2.Kb6#
- 1...Rd8
- 2.Kxb5#
- 2.Kb6#
- 2.Qxd8#
- 1...Re8
- 2.Kxb5#
- 2.Kb6#
- 1...Rf8
- 2.Kxb5#
- 2.Kb6#
- 1...Rg8
- 2.Kxb5#
- 2.Kb6#
- 1...Rh8
- 2.Kxb5#
- 2.Kb6#
- 1...b4!
- 1...Rb6+
- 1.c7?
- threat
- 2.cxb8Q#
- 2.cxb8R#
- 1...Rb6+
- 2.Kxb6#
- 2.Sxb6#
- 1...b4
- 2.cxb8Q#
- 2.cxb8R#
- 1...Rc8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 2.Qg2#
- 1...Rd8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 2.Qg2#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 1...Rf8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 1...Rg8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 2.Qxg8#
- 1...Rh8
- 2.Kb6#
- 2.Sb6#
- 2.Qd5#
- 2.Qg2#
- 1...Rb7!
- threat
- 1.Qg8?
- Keys
- 1.Qh2!
- threat
- 2.Qxb8#
- 1...Rb6+
- 2.Sxb6#
- 1...Rb7
- 2.cxb7#
- 1...Rc8
- 2.Sb6#
- 1...Rd8
- 2.Sb6#
- 1...Re8
- 2.Sb6#
- 1...Rf8
- 2.Sb6#
- 1...Rg8
- 2.Sb6#
- 1...Rh8
- 2.Sb6#
- 2.Qxh8#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(c);CHECK::QAR(A)+K(B),XR(c)
- R(c);OGATE::P(C),XR(c)
- Tries
- Try
- Q(A);P_PINR(c)
- Threat
- DUALS(2)
- Vars
- R(c);OGATEB::QAR2(A),XR(c)
- R(c);OGATEB::QAR(A),XR(c)
- Refutation
- R(c);N_SPINR(c),XQ(A)
- Try
- Q(A);
- Vars
- R(c);CHECK::QAR(A)+K(B),XR(c)
- R(c);OGATE::P(C),XR(c)
- Refutation
- P(a);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(c);OGATE::P(C),XR(c)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Vars
- R(c);CHECK::QAR(A)+K(B),XR(c)
- R(c);OGATE::P(C),XR(c)
- Refutation
- P(a);
- Try
- Q(A);
- Vars
- R(c);CHECK::QAR(A)+K(B),XR(c)
- R(c);OGATE::P(C),XR(c)
- Refutation
- P(a);
- Try
- P(C);
- Threat
- PXR(c)=Q
- Vars
- P(a);::PXR(c)=Q
- Refutation
- R(c);
- Try
- Actual
- Q(A);
- Threat
- QAR1(A),XR(c)
- Vars
- R(c);CHECK,N_GUARD::S(D),XR(c)
- R(c);OGATE::P(C),XR(c)
- R(c);N_GUARD::S(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).