MESON Chess Problem Database
Problem Display
PID: 247640 (8/5Bp1/4R1n1/3N1k2/5PpP/1K2pr2/4p3/4b2Q w - - 0 1)
Watson, Frederick W
British Chess Magazine, 1932
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Rxf4
- 2.Sxe3#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Bb4
- 2.Qb1#
- 1...Bxh4
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- Tries
- 1.Kb2?
- 1...Rxf4
- 2.Sxe3#
- 1...Bxh4
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Bb4
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Bc3+!
- 1...Rxf4
- 1.Ka3?
- 1...Rxf4
- 2.Sxe3#
- 1...Bxh4
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Bb4+!
- 1...Rxf4
- 1.Ka4?
- 1...Bxh4
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Bb4
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rxf4+!
- 1...Bxh4
- 1.Kc4?
- 1...Se5+
- 2.Rxe5#
- 1...Bxh4
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Bb4
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rxf4+!
- 1...Se5+
- 1.Qxf3?
- threat
- 2.Sxe3#
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Bf2
- 2.Qe4#
- 1...Se5
- 2.Sxe3#
- 2.Se7#
- 2.Rxe5#
- 1...g3
- 2.Sxe3#
- 2.Qh5#
- 1...gxf3!
- threat
- 1.Kb2?
- Keys
- 1.Ka2!
- 1...Rxf4
- 2.Sxe3#
- 1...Bxh4
- 2.Qb1#
- 1...Sxf4
- 2.Se7#
- 1...Sxh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...g3
- 2.Qh3#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bd2
- 2.Qb1#
- 1...Bf2
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bg3
- 2.Qb1#
- 1...Bb4
- 2.Qb1#
- 1...Ba5
- 2.Qb1#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rxf4
- 1.Ka2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(d);OGATE::QAB1(A)
- R(d);N_GUARD,SBLOCK,XP(C)::S(E),XP(c)
- B(a);OGATE::QAB(A)
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- S(g);N_GUARD::R1(F),XS(g)
- S(g);N_GUARD::R1(F)
- P(e);OGATEB::QAB(A)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(d);N_GUARD,SBLOCK,XP(C)::S(E),XP(c)
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- S(g);N_GUARD::R1(F),XS(g)
- P(e);OGATEB::QAB(A)
- R(d);OGATE::QAB1(A)
- B(a);OGATE::QAB(A)
- S(g);N_GUARD::R1(F)
- Refutation
- B(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- R(d);N_GUARD,SBLOCK,XP(C)::S(E),XP(c)
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- S(g);N_GUARD::R1(F),XS(g)
- P(e);OGATEB::QAB(A)
- R(d);OGATE::QAB1(A)
- B(a);OGATE::QAB(A)
- S(g);N_GUARD::R1(F)
- Refutation
- B(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- S(g);N_GUARD::R1(F),XS(g)
- P(e);OGATEB::QAB(A)
- R(d);OGATE::QAB1(A)
- B(a);OGATE::QAB(A)
- S(g);N_GUARD::R1(F)
- Refutation
- R(d);CHECK,XP(C)
- Try
- K(B);S_FLIGHT
- Vars
- S(g);CHECK,N_GUARD::R1(F),XS(g)
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- P(e);OGATEB::QAB(A)
- R(d);OGATE::QAB1(A)
- B(a);OGATE::QAB(A)
- S(g);N_GUARD::R1(F)
- Refutation
- R(d);CHECK,XP(C)
- Try
- Q(A);XR(d)
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(A)
- Refutation
- P(e);XQ(A)
- Try
- Actual
- K(B);S_FLIGHT
- Vars
- R(d);N_GUARD,SBLOCK,XP(C)::S(E),XP(c)
- B(a);OGATE,XP(D)::QAB(A)
- S(g);N_GUARD,SBLOCK,XP(C)::S(E)
- S(g);N_GUARD,XP(D)::R1(F)
- S(g);N_GUARD::R1(F),XS(g)
- P(e);OGATEB::QAB(A)
- R(d);OGATE::QAB1(A)
- B(a);OGATE::QAB(A)
- S(g);N_GUARD::R1(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).