MESON Chess Problem Database
Problem Display
PID: 143338 (k1K5/P1P5/1b6/6p1/1p6/5R2/1Q1P1pB1/R6q w - - 0 1)
Lipton, Michael
The Problemist, 2011
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxa1
- 2.Ra3#
- 1...Qb1
- 2.Rd3#
- 1...Qc1
- 2.Rc3#
- 1...Qe1
- 2.Re3#
- 1...Qh3+
- 2.Rxh3#
- 1...Qh4
- 2.Rf4#
- 1...Qh6
- 2.Rf6#
- 1...Qh7
- 2.Rf5#
- 1...Qh8+
- 2.Rf8#
- 1...Qxa1
- Tries
- 1.Bxh1?
- threat
- 2.Rxf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...f1Q
- 2.Rfxf1#
- 1...f1S
- 2.Rfxf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...f1B
- 2.Rfxf1#
- 1...f1R
- 2.Rfxf1#
- 1...Be3
- 2.Rxf2#
- 2.Rxe3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...b3
- 2.Rxf2#
- 2.Rxb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Ba5!
- threat
- 1.Qe5?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qh3+
- 2.Rxh3#
- 1...Qh8+
- 2.Rf8#
- 1...Qxa1
- 2.Ra3#
- 1...Qb1
- 2.Rd3#
- 2.Qd5#
- 1...Qc1
- 2.Rc3#
- 1...Qe1
- 2.Re3#
- 2.Qd5#
- 1...Qh4
- 2.Rf4#
- 2.Qd5#
- 1...Qh6
- 2.Rf6#
- 1...Qh7
- 2.Rf5#
- 2.Qd5#
- 1...Ba5!
- threat
- 1.Qb1?
- threat
- 2.Qe4#
- 1...Qh3+
- 2.Rxh3#
- 1...Qh8+
- 2.Rf8#
- 1...Qxb1
- 2.Rd3#
- 1...Qc1
- 2.Rc3#
- 1...Qe1
- 2.Re3#
- 1...Qh4
- 2.Rf4#
- 1...Qh6
- 2.Rf6#
- 1...Qh7
- 2.Rf5#
- 1...Ba5!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 2.Qc6#
- 1...Qh3+
- 2.Rxh3#
- 1...Qh8+
- 2.Rf8#
- 1...Qxa1
- 2.Ra3#
- 1...Qb1
- 2.Rxf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 2.Qc6#
- 1...Qc1
- 2.Rxf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Re3#
- 2.Qc6#
- 1...Qh4
- 2.Rf4#
- 2.Qc6#
- 1...Qh6
- 2.Rf6#
- 1...Qh7
- 2.Rf5#
- 2.Qc6#
- 1...Bc5
- 2.Qe4#
- 1...Ba5!
- threat
- 1.Bxh1?
- Keys
- 1.Qxb4!
- threat
- 2.Qe4#
- 1...Qh3+
- 2.Rxh3#
- 1...Qh8+
- 2.Rf8#
- 1...Qxa1
- 2.Ra3#
- 1...Ba5
- 2.Qb7#
- 2.Qb8#
- 1...Qb1
- 2.Rd3#
- 1...Qc1
- 2.Rc3#
- 1...Qe1
- 2.Re3#
- 1...Qh4
- 2.Rf4#
- 1...Qh6
- 2.Rf6#
- 1...Qh7
- 2.Rf5#
- 1...Bd4
- 2.Qb7#
- 2.Qb8#
- threat
- 1.Qxb4!
There are these afters: 143339
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD,XR(A)::B(D)+R(E)
- Q(a);N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,P_PINP(G)::B(D)+R(E)
- Q(a);CHECK,N_GUARD::B(D)+R(E),XQ(a)
- Q(a);N_GUARD,SBLOCK::B(D)+R(E)
- Q(a);CHECK,N_GUARD::B(D)+R(E)
- Tries
- Try
- B(D);XQ(a)
- Threat
- DUALS(13)
- Vars
- P(b);OGATE::B(D)+R(E),XQ(b)
- P(b);OGATE::B(D)+R(E),XB(b)
- P(b);OGATE::B(D)+R(E),XR(b)
- Refutation
- B(e);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::B(D)+R(E),XQ(a)
- Q(a);CHECK,N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,XR(A)::B(D)+R(E)
- Q(a);N_GUARD,P_PINP(G)::B(D)+R(E)
- Q(a);N_GUARD::B(D)+R(E)
- Refutation
- B(e);
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- Q(a);CHECK,N_GUARD::B(D)+R(E),XQ(a)
- Q(a);CHECK,N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,XQ(B)::B(D)+R(E)
- Q(a);N_GUARD,P_PINP(G)::B(D)+R(E)
- Q(a);N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,SBLOCK::B(D)+R(E)
- Refutation
- B(e);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::B(D)+R(E),XQ(a)
- Q(a);CHECK,N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,XR(A)::B(D)+R(E)
- Q(a);N_GUARD::B(D)+R(E)
- B(e);::QAB(B)
- Refutation
- B(e);
- Try
- Actual
- Q(B);XP(c)
- Threat
- QAB(B)
- Vars
- Q(a);CHECK,N_GUARD::B(D)+R(E),XQ(a)
- Q(a);CHECK,N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,XR(A)::B(D)+R(E)
- Q(a);N_GUARD::B(D)+R(E)
- Q(a);N_GUARD,P_PINP(G)::B(D)+R(E)
- Q(a);N_GUARD,SBLOCK::B(D)+R(E)
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).