MESON Chess Problem Database
Problem Display
PID: 55330 (2R2q1n/1B6/7r/2NPQ1P1/P1kB3R/K1P1P3/2P5/8 w - - 0 1)
Mansfield, Comins
Comm., Suomen Shakki, 1973
#2
13 + 4
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5+
- 2.Rxc5#
- 1...Qf1
- 2.Se6#
- 1...Qf2
- 2.Se6#
- 1...Qf3
- 2.Se6#
- 1...Qf4
- 2.Se6#
- 1...Qf5
- 2.Se6#
- 1...Qf6
- 2.Se6#
- 1...Rxh4
- 2.Ba6#
- 1...Rh5
- 2.Ba6#
- 1...Ra6
- 2.Bxa6#
- 1...Rh7
- 2.Ba6#
- 1...Sg6
- 2.Ba6#
- 1...Qxc5+
- Tries
- 1.Qh2?
- threat
- 2.Qe2#
- 1...Qxc5+
- 2.Rxc5#
- 1...Qf1
- 2.Se6#
- 1...Qf2
- 2.Se6#
- 1...Qf3
- 2.Se6#
- 1...Qf5
- 2.Se6#
- 1...Rc6!
- threat
- 1.Qe4?
- threat
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bxh8#
- 2.Qd3#
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxc8
- 2.Qd3#
- 1...Rxh4
- 2.Ba6#
- 2.Qd3#
- 1...Qe7
- 2.Be5#
- 2.Qd3#
- 1...Qg7
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 2.Qd3#
- 1...Qf1
- 2.Se6#
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bxh8#
- 1...Qf3
- 2.Se6#
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Qf5
- 2.Se6#
- 1...Qf6
- 2.Se6#
- 2.Be5#
- 2.Bxf6#
- 2.Qd3#
- 1...Qe8
- 2.Be5#
- 2.Qd3#
- 1...Re6
- 2.Be5#
- 2.Qd3#
- 1...Rf6
- 2.Be5#
- 2.Bxf6#
- 2.Qd3#
- 1...Sg6
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Ba6#
- 2.Qd3#
- 1...Sf7
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Qd3#
- 1...Rc6!
- threat
- 1.Qf5?
- threat
- 2.Qd3#
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxf5
- 2.Se6#
- 1...Rc6!
- threat
- 1.Qh2?
- Keys
- 1.Qf6!
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxf6
- 2.Se6#
- 1...Qxc8
- 2.Qf1#
- 1...Rxh4
- 2.Qa6#
- 1...Rxf6
- 2.Bxf6#
- 1...Qd6
- 2.Qf1#
- 1...Qe7
- 2.Qf1#
- 1...Qg7
- 2.Sd7#
- 2.Qf1#
- 1...Qf7
- 2.Sd7#
- 1...Qd8
- 2.Qf1#
- 1...Qe8
- 2.Qf1#
- 1...Qg8
- 2.Qf1#
- 1...Rh5
- 2.Qa6#
- 1...Rg6
- 2.Be5#
- 1...Rh7
- 2.Qa6#
- 1...Sg6
- 2.Qa6#
- 1...Sf7
- 2.Qf1#
- 1...Qxc5+
- 1.Qf6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 10
- REMOVED MATES = 6
- Sets
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R1(M),XQ(c)
- Q(c);N_PINS(H)::R(M)+S(H)
- R(b);N_GUARD,XR(G)::B(L)
- R(b);N_GUARD::B(L)
- R(b);N_GUARD,P_PINP(E)::B(L),XR(b)
- S(d);S_CUTR(b)::B(L)
- Tries
- Try
- Q(J);
- Threat
- QAB(J)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R1(M),XQ(c)
- Q(c);N_PINS(H)::R(M)+S(H)
- Refutation
- R(b);
- Try
- Q(J);
- Threat
- DUALS(5)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R1(M),XQ(c)
- Q(c);N_PINS(H),XR(M)::QAB1(J)
- Q(c);N_PINS(H)::QAB1(J)
- Q(c);N_PINS(H)::R(M)+S(H)
- Refutation
- R(b);
- Try
- Q(J);
- Threat
- QAB1(J)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R1(M),XQ(c)
- Q(c);N_PINS(H),XQ(J)::R(M)+S(H)
- Refutation
- R(b);
- Try
- Actual
- Q(J);
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R1(M),XQ(c)
- Q(c);N_PINS(H),XQ(J)::R(M)+S(H)
- Q(c);N_GUARD,N_PINS(H),XR(M)::QAB(J)
- R(b);N_GUARD,XR(G)::QAB(J)
- R(b);OGATE,XQ(J)::R(G)+B(F),XR(b)
- Q(c);N_GUARD::QAB(J)
- Q(c);N_PINS(H)::R(M)+S(H)
- Q(c);N_GUARD,N_PINS(H)::QAB(J)
- R(b);N_GUARD::QAB(J)
- R(b);N_GUARD::R(G)+B(F)
- S(d);S_CUTR(b)::QAB(J)
- S(d);S_CUTQ(c)::QAB(J)
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).