MESON Chess Problem Database
Problem Display
PID: 10064 (8/2p2K2/2B5/5k2/3pRP1p/3p2nP/3PnP1B/3Q4 w - - 0 1)
Whyatt, William Albert
South African Chess Player, 1961
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Qg4#
- 1...Sg1
- 2.Qg4#
- 1...Sc3
- 2.Qg4#
- 1...Sxf4
- 2.Qg4#
- 1...Sf1
- 2.Re5#
- 1...Sh1
- 2.Re5#
- 1...Sxe4
- 2.Bd7#
- 1...Sh5
- 2.Re5#
- 1...Sc1
- Tries
- 1.Kg7?
- 1...Sxf4
- 2.Qg4#
- 1...Sxe4
- 2.Bd7#
- 1...Sc1
- 2.Qg4#
- 1...Sg1
- 2.Qg4#
- 1...Sc3
- 2.Qg4#
- 1...Sf1
- 2.Re5#
- 1...Sh1
- 2.Re5#
- 1...Sh5+!
- 1...Sxf4
- 1.Bxg3?
- threat
- 2.Re5#
- 1...Sxg3
- 2.Qg4#
- 1...Sxf4
- 2.Qg4#
- 1...hxg3!
- threat
- 1.Rxd4?
- threat
- 2.Bd7#
- 1...Sxd4
- 2.Qg4#
- 1...Sxf4!
- threat
- 1.Re6?
- threat
- 2.Rf6#
- 1...Sxf4
- 2.Qg4#
- 1...Se4
- 2.Bxe4#
- 2.Re5#
- 1...Sh5
- 2.Be4#
- 2.Re5#
- 1...Kxf4!
- threat
- 1.Re7?
- 1...Sxf4
- 2.Qg4#
- 1...Sc1
- 2.Qg4#
- 1...Sg1
- 2.Qg4#
- 1...Sc3
- 2.Qg4#
- 1...Sf1
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Sh1
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Se4
- 2.Bxe4#
- 2.Bd7#
- 2.Re5#
- 1...Sh5
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Kxf4!
- 1...Sxf4
- 1.Re8?
- 1...Sxf4
- 2.Qg4#
- 1...Sc1
- 2.Qg4#
- 1...Sg1
- 2.Qg4#
- 1...Sc3
- 2.Qg4#
- 1...Sf1
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Sh1
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Se4
- 2.Bxe4#
- 2.Bd7#
- 2.Re5#
- 1...Sh5
- 2.Be4#
- 2.Bd7#
- 2.Re5#
- 1...Kxf4!
- 1...Sxf4
- 1.Qxe2?
- threat
- 2.Bd7#
- 2.Qg4#
- 1...Sxe2
- 2.Re5#
- 1...dxe2!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qb5#
- 1...Sxe4
- 2.Bd7#
- 2.Qd5#
- 2.Qe6#
- 1...Sc3
- 2.Qe6#
- 1...Sxf4!
- threat
- 1.Qh1?
- threat
- 2.Bd7#
- 1...Sxh1
- 2.Re5#
- 1...Sxf4!
- threat
- 1.fxg3?
- threat
- 2.Re5#
- 2.g4#
- 1...Sxg3
- 2.Qg4#
- 1...Sxf4
- 2.Qg4#
- 1...hxg3!
- threat
- 1.Kg7?
- Keys
- 1.Qe1!
- 1...Sxf4
- 2.Re5#
- 1...Sxe4
- 2.Bd7#
- 1...Sc3
- 2.Bd7#
- 1...Sc1
- 2.Bd7#
- 1...Sg1
- 2.Bd7#
- 1...Sf1
- 2.Re5#
- 1...Sh1
- 2.Re5#
- 1...Sh5
- 2.Re5#
- 1...Sxf4
- 1.Qe1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);OGATE::QAB1(A)
- S(a);OGATE,XP(G)::QAB1(A)
- S(c);::R1(F)
- S(c);SBLOCK,XR(F)::B(H)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- S(a);OGATE,XP(G)::QAB1(A)
- S(c);SBLOCK,XR(F)::B(H)
- S(a);OGATE::QAB1(A)
- S(c);::R1(F)
- Refutation
- S(c);CHECK
- Try
- B(D);XS(c)
- Threat
- R1(F)
- Vars
- S(a);OGATE,XB(D)::QAB1(A)
- S(a);OGATE,XP(G)::QAB1(A)
- Refutation
- P(e);XB(D)
- Try
- R(F);XP(d)
- Threat
- B(H)
- Vars
- S(a);OGATE,XR(F)::QAB1(A)
- Refutation
- S(a);XP(G)
- Try
- R(F);
- Threat
- R1(F)
- Vars
- S(a);OGATE,XP(G)::QAB1(A)
- Refutation
- K(f);P-FLIGHT,P_SPINS(c),XP(G)
- Try
- R(F);
- Vars
- S(a);OGATE,XP(G)::QAB1(A)
- S(a);OGATE::QAB1(A)
- Refutation
- K(f);P-FLIGHT,P_SPINS(c),XP(G)
- Try
- R(F);
- Vars
- S(a);OGATE,XP(G)::QAB1(A)
- S(a);OGATE::QAB1(A)
- Refutation
- K(f);P-FLIGHT,P_SPINS(c),XP(G)
- Try
- Q(A);XS(a)
- Threat
- DUALS(2)
- Vars
- S(c);XQ(A)::R1(F)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(a);::QAB1(A)
- Refutation
- S(a);XP(G)
- Try
- Q(A);
- Threat
- B(H)
- Vars
- S(c);XQ(A)::R1(F)
- Refutation
- S(a);XP(G)
- Try
- P(C);XS(c)
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XP(C)::QAB1(A)
- S(a);OGATE,XP(G)::QAB1(A)
- Refutation
- P(e);XP(C)
- Try
- Actual
- Q(A);
- Vars
- S(a);SBLOCK,XP(G)::R1(F)
- S(c);SBLOCK,XR(F)::B(H)
- S(a);::B(H)
- S(c);::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).