MESON Chess Problem Database
Problem Display
PID: 138989 (3R4/3q1p2/5P1K/8/1p4BB/1Pp1Q3/N1ppP1p1/2Nk1bR1 w - - 0 1)
Davis, Edward
Kipping, Cyril Stanley
The Problemist, 1936
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.exd3#
- 1...dxc1Q
- 2.Qxc1#
- 1...dxc1S
- 2.Qxc1#
- 1...dxc1B
- 2.Qxc1#
- 1...dxc1R
- 2.Rxd7#
- 2.Qxc1#
- 1...Qd3
- Tries
- 1.Qxc3?
- 1...dxc1Q+
- 2.e3#
- 1...dxc1B+
- 2.e3#
- 1...Qxg4
- 2.Rxd2#
- 2.Qxd2#
- 1...Qxd8
- 2.e3#
- 2.e4#
- 1...dxc1S
- 2.Qe1#
- 1...dxc1R
- 2.Rxd7#
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qa4
- 2.Rxd2#
- 2.Qxd2#
- 2.e3#
- 2.e4#
- 1...Qb5
- 2.Rxd2#
- 2.Qxd2#
- 1...Qf5
- 2.Rxd2#
- 2.Qxd2#
- 1...Qc6
- 2.Rxd2#
- 2.Qxd2#
- 2.e4#
- 1...Qe6
- 2.Rxd2#
- 2.Qxd2#
- 1...Qc8
- 2.Rxd2#
- 2.Qxd2#
- 1...Qe8
- 2.Rxd2#
- 2.Qxd2#
- 2.e3#
- 2.e4#
- 1...Qd3
- 2.exd3#
- 1...Qd4
- 2.e4#
- 1...Qd5
- 2.e4#
- 1...Qd6
- 2.e3#
- 2.e4#
- 1...Qa7
- 2.Rxd2#
- 2.Qxd2#
- 2.e3#
- 2.e4#
- 1...Qb7
- 2.Rxd2#
- 2.Qxd2#
- 2.e4#
- 1...Qc7
- 2.Rxd2#
- 2.Qxd2#
- 2.e3#
- 2.e4#
- 1...Qe7
- 2.Rxd2#
- 2.Qxd2#
- 2.e3#
- 2.e4#
- 1...bxc3!
- 1...dxc1Q+
- 1.Qxc3?
- Keys
- 1.Qf2!
- 1...dxc1Q+
- 2.e3#
- 1...dxc1B+
- 2.e3#
- 1...Qxg4
- 2.Qe1#
- 1...Qxd8
- 2.e3#
- 2.e4#
- 1...dxc1S
- 2.Qe1#
- 1...dxc1R
- 2.Rxd7#
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qa4
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qb5
- 2.Qe1#
- 1...Qf5
- 2.Qe1#
- 1...Qc6
- 2.Qe1#
- 2.e4#
- 1...Qe6
- 2.Qe1#
- 1...Qc8
- 2.Qe1#
- 1...Qe8
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qd3
- 2.exd3#
- 1...Qd4
- 2.e4#
- 1...Qd5
- 2.e4#
- 1...Qd6
- 2.e3#
- 2.e4#
- 1...Qa7
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qb7
- 2.Qe1#
- 2.e4#
- 1...Qc7
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...Qe7
- 2.Qe1#
- 2.e3#
- 2.e4#
- 1...dxc1Q+
- 1.Qf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Q(h);OGATE::B(G)+P(D),XQ(h)
- P(d);OGATE,P_PINQ(F),P_SPINQ(h),XS(A)::QAR1(F),XQ(d)
- P(d);OGATE,P_SPINQ(h),XS(A)::QAR1(F),XS(d)
- P(d);OGATE,P_PINQ(F),P_SPINQ(h),XS(A)::QAR1(F),XB(d)
- Tries
- Try
- Q(F);XP(f)
- Vars
- P(d);CHECK,P_SPINQ(h),XS(A)::B(G)+P(D)
- P(d);OGATE,P_SPINQ(h),XS(A)::QAR1(F)
- Q(h);OGATE::B(G)+P(D),XQ(h)
- Q(h);N_GUARD::B(G)+P(D)
- Refutation
- P(g);XQ(F)
- Try
- Actual
- Q(F);
- Vars
- P(d);CHECK,P_SPINQ(h),XS(A)::B(G)+P(D)
- Q(h);P_SPINP(d),XB(G)::QAR1(F)
- P(d);N_GUARD,P_SPINQ(h),XS(A)::QAR1(F)
- Q(h);P_SPINP(d)::QAR1(F)
- Q(h);P_PINP(I),P_SPINP(d)::QAR1(F)
- Q(h);OGATE::B(G)+P(D),XQ(h)
- Q(h);N_GUARD::B(G)+P(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).