MESON Chess Problem Database
Problem Display
PID: 144473 (4K3/2b3Q1/4R3/2B4N/7p/5k1P/4r2n/3B2nq w - - 0 1)
Francey, James
The Problemist, 1944
#2
7 + 7
| 14867 | BCPS Library | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Qc3#
- 1...Bg3
- 2.Qb7#
- 1...Bf4
- 2.Qb7#
- 1...Ba5
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Bd6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sxh3
- 2.Bxe2#
- 1...Sf1
- 2.Qg4#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- Tries
- 1.Kf8?
- 1...Sxh3
- 2.Bxe2#
- 1...Bg3
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- 2.Qc3#
- 1...Bf4
- 2.Qb7#
- 1...Ba5
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Bd6+!
- 1...Sxh3
- 1.Bxg1?
- threat
- 2.Bxe2#
- 2.Re3#
- 1...Bg3
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- 2.Re3#
- 2.Qc3#
- 1...Bf4
- 2.Bxe2#
- 2.Qb7#
- 1...Bb6
- 2.Bxe2#
- 2.Qb7#
- 1...Sf1
- 2.Bxe2#
- 2.Qg4#
- 1...Qxg1!
- threat
- 1.Bd4?
- 1...Sxh3
- 2.Bxe2#
- 1...Bg3
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Sg4
- 2.Qxg4#
- 1...Bf4
- 2.Qb7#
- 1...Ba5
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Bd6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Qg2!
- 1...Sxh3
- 1.Bb6?
- 1...Sxh3
- 2.Bxe2#
- 1...Bg3
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- 2.Qc3#
- 1...Bf4
- 2.Qb7#
- 1...Bd6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Bxb6!
- 1...Sxh3
- 1.Ba7?
- 1...Sxh3
- 2.Bxe2#
- 1...Bg3
- 2.Qb7#
- 1...Be5
- 2.Qb7#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- 2.Qc3#
- 1...Bf4
- 2.Qb7#
- 1...Ba5
- 2.Qb7#
- 1...Bd6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Bb6!
- 1...Sxh3
- 1.Rxe2?
- threat
- 2.Qc3#
- 1...Sxh3
- 2.Re1#
- 1...Bf4
- 2.Qb7#
- 1...Ba5
- 2.Qf6#
- 2.Qf8#
- 2.Qb7#
- 2.Qf7#
- 1...Be5
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Sg4
- 2.Qxg4#
- 1...Sxe2!
- threat
- 1.Qd4?
- threat
- 2.Qf2#
- 2.Qe4#
- 2.Qd5#
- 1...Sxh3
- 2.Qe4#
- 1...Qg2
- 2.Qc3#
- 2.Qe3#
- 2.Qd3#
- 2.Qe4#
- 2.Qd5#
- 1...Bg3
- 2.Qe4#
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Sg4
- 2.Qe4#
- 2.Qxg4#
- 2.Qd5#
- 1...Kg2!
- threat
- 1.Qxg1?
- threat
- 2.Bxe2#
- 2.Re3#
- 2.Qf2#
- 2.Qxh1#
- 1...Be5
- 2.Qxh1#
- 1...Bf4
- 2.Bxe2#
- 2.Qf2#
- 2.Qxh1#
- 1...Qg2
- 2.Re3#
- 2.Qe3#
- 1...Bg3
- 2.Bxe2#
- 2.Re3#
- 2.Qxh1#
- 1...Sf1
- 2.Bxe2#
- 2.Qf2#
- 2.Qxh1#
- 2.Qg4#
- 1...Sg4
- 2.Bxe2#
- 2.Qxh1#
- 2.Qxg4#
- 1...Qxg1!
- threat
- 1.Qg5?
- threat
- 2.Qd5#
- 1...Sxh3
- 2.Bxe2#
- 1...Be5!
- threat
- 1.Qf7+?
- 1...Bf4
- 2.Qb7#
- 1...Kg2!
- 1...Bf4
- 1.Qh7?
- threat
- 2.Qe4#
- 1...Be5
- 2.Qb7#
- 1...Kg2!
- threat
- 1.Kf8?
- Keys
- 1.Re5!
- 1...Bxe5
- 2.Qb7#
- 1...Sxh3
- 2.Bxe2#
- 1...Sg4
- 2.Qxg4#
- 1...Qg2
- 2.Qf6#
- 2.Qf8#
- 2.Qf7#
- 1...Ba5
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Bd6
- 2.Qb7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sf1
- 2.Qg4#
- 1...Bxe5
- 1.Re5!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- Q(b);SBLOCK::QAR(F)
- B(g);OGATE::QAB(F)
- B(g);N_PINR(E),OGATE::QAB(F)
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Tries
- Try
- K(G);N_SPINR(E),P-FLIGHT
- Vars
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- B(g);OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Q(b);SBLOCK::QAR(F)
- S(d);N_GUARD::QAB1(F)
- Refutation
- B(g);CHECK
- Try
- B(C);XS(a)
- Threat
- DUALS(2)
- Vars
- B(g);OGATE::QAB(F)
- B(g);N_PINR(E),OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Refutation
- Q(b);XB(C)
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- B(g);OGATE::QAB(F)
- B(g);N_PINR(E),OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- S(d);N_GUARD::QAB1(F)
- Refutation
- Q(b);
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- B(g);OGATE::QAB(F)
- B(g);N_PINR(E),OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Q(b);SBLOCK::QAR(F)
- S(d);N_GUARD::QAB1(F)
- Refutation
- B(g);XB(C)
- Try
- B(C);
- Vars
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- B(g);OGATE::QAB(F)
- B(g);N_PINR(E),OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Q(b);SBLOCK::QAR(F)
- S(d);N_GUARD::QAB1(F)
- Refutation
- B(g);
- Try
- R(E);N_SPINR(E),XR(c)
- Threat
- QAR(F)
- Vars
- S(a);N_GUARD,XP(B)::B(A)+R(E)
- B(g);OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Refutation
- S(a);P_SPINS(a),XR(E)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- S(a);XP(B)::QAB1(F)
- B(g);N_PINR(E)::QAB(F)
- Refutation
- K(e);N_SPINR(c),S_FLIGHT
- Try
- Q(F);XS(a)
- Threat
- DUALS(4)
- Vars
- B(g);N_PINR(E)::QAB(F),XQ(b)
- Refutation
- Q(b);XQ(F)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- Refutation
- B(g);N_PINR(E)
- Try
- Q(F);CHECK
- Vars
- B(g);OGATE,P_SPINB(g)::QAB(F)
- Refutation
- K(e);N_SPINR(c),S_FLIGHT
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- B(g);N_PINR(E),OGATE::QAB(F)
- Refutation
- K(e);N_SPINR(c),S_FLIGHT
- Try
- Actual
- R(E);
- Vars
- B(g);OGATE,XR(E)::QAB(F)
- S(a);N_GUARD,XP(B)::B(A),XR(c)
- S(d);N_GUARD::QAB1(F),XS(d)
- B(g);OGATE::QAB(F)
- S(d);N_GUARD::QAB1(F)
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).