MESON Chess Problem Database
Problem Display
PID: 63338 (4B2R/5rp1/5pk1/6rN/4P3/3nB3/3P4/5KQR w - - 0 1)
Bonavia-Hunt, Rev Noel Aubrey
Chess, 1945
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxg1+
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...f5
- 2.Qxg5#
- 1...Rxg1+
- Tries
- 1.Ke2?
- 1...Rg2+
- 2.Qxg2#
- 1...Sf4+
- 2.Sxf4#
- 1...Rxg1
- 2.Rxg1#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...f5
- 2.Qxg5#
- 1...Sc1+!
- 1...Rg2+
- 1.Bf2?
- 1...Rxg1+
- 2.Rxg1#
- 1...Sxf2
- 2.Sf4#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...f5!
- 1...Rxg1+
- 1.Bd4?
- 1...Rxg1+
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...f5!
- 1...Rxg1+
- 1.Bc5?
- 1...Rxg1+
- 2.Rxg1#
- 1...Sxc5
- 2.Sf4#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Se5
- 2.Sf4#
- 1...f5!
- 1...Rxg1+
- 1.Bxg5?
- threat
- 2.Be3#
- 2.Bf4#
- 2.Bh4#
- 2.Bxf6#
- 2.Bh6#
- 1...f5
- 2.Be3#
- 2.Bf4#
- 2.Bh4#
- 2.Bf6#
- 2.Bh6#
- 2.Be7#
- 2.Bd8#
- 1...Se1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 2.Bxf4#
- 1...Se5
- 2.Sf4#
- 1...fxg5+!
- threat
- 1.Bb6?
- 1...Rxg1+
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...f5!
- 1...Rxg1+
- 1.Rh2?
- 1...f5
- 2.Qxg5#
- 1...Rg2
- 2.Rxg2#
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg1+!
- 1...f5
- 1.Rh3?
- 1...f5
- 2.Qxg5#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Rxg3#
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg1+!
- 1...f5
- 1.Rh4?
- 1...f5
- 2.Qxg5#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Rxg4#
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg1+!
- 1...f5
- 1.Qg2?
- 1...f5
- 2.Qxg5#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg2!
- 1...f5
- 1.Qg3?
- 1...f5
- 2.Qd6#
- 2.Qxg5#
- 1...Rg4
- 2.Qxg4#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg3!
- 1...f5
- 1.Qg4?
- 1...f5
- 2.Qxg5#
- 2.exf5#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg4!
- 1...f5
- 1.Ke2?
- Keys
- 1.Ba7!
- 1...Rxg1+
- 2.Rxg1#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Qxg3#
- 1...Rg4
- 2.Qxg4#
- 1...f5
- 2.Qb6#
- 1...Sc1
- 2.Sf4#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Rxg1+
- 1.Ba7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- P(c);N_GUARD::QAR1(B),XR(b)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(b);CHECK,OGATEB::QAR(B),XR(b)
- S(a);CHECK,N_GUARD::S(G),XS(a)
- R(b);N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- P(c);N_GUARD::QAR1(B),XR(b)
- Refutation
- S(a);CHECK
- Try
- B(E);
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- S(a);N_GUARD,XB(E)::S(G)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(c);
- Try
- B(E);
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(c);
- Try
- B(E);
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- S(a);N_GUARD,XB(E)::S(G)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(c);
- Try
- B(E);P_PINR(e),XR(b)
- Threat
- DUALS(5)
- Vars
- S(a);N_GUARD::S(G)
- Refutation
- P(c);CHECK,P_SPINP(c),XB(E)
- Try
- B(E);
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(c);
- Try
- R(C);
- Vars
- P(c);N_GUARD::QAR1(B),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);CHECK,N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- R(C);
- Vars
- P(c);N_GUARD::QAR1(B),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);CHECK,N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- R(C);
- Vars
- P(c);N_GUARD::QAR1(B),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);CHECK,N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- Q(B);
- Vars
- P(c);N_GUARD::QAR1(B),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- Q(B);
- Vars
- R(b);OGATEB::QAR2(B),XR(b)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- Q(B);
- Vars
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- R(b);N_SPINR(b),P_SPINR(e),XQ(B)
- Try
- Actual
- B(E);
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,P_SPINR(e),XQ(B)::R(C),XR(b)
- R(b);OGATEB::QAR(B),XR(b)
- R(b);OGATEB::QAR2(B),XR(b)
- P(c);OGATEB::QAR(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
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).