MESON Chess Problem Database
Problem Display
PID: 63200 (n5B1/1R1p1Q2/P1k5/3r4/N2pb3/3p1p1p/3P1K1B/8 w - - 0 1)
Bonavia-Hunt, Rev Noel Aubrey
Chess, 1945
#2
8 + 9
| 55 | The Observer | 1953 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Re5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sb6
- 2.Rxb6#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...Ra5
- Tries
- 1.Ke1?
- 1...Re5
- 2.Qxd7#
- 1...Sb6
- 2.Rxb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...f2+!
- 1...Re5
- 1.Kf1?
- 1...Re5
- 2.Qxd7#
- 1...Sb6
- 2.Rxb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...f2!
- 1...Re5
- 1.Bg3?
- 1...Re5
- 2.Qxd7#
- 1...Sb6
- 2.Rxb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...h2!
- 1...Re5
- 1.Bf4?
- 1...Re5
- 2.Qxd7#
- 1...Sb6
- 2.Rxb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...h2!
- 1...Re5
- 1.Be5?
- 1...Rxe5
- 2.Qxd7#
- 1...Sb6
- 2.Rxb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...h2!
- 1...Rxe5
- 1.Bb8?
- 1...Sb6
- 2.Rxb6#
- 1...Sc7
- 2.Rb6#
- 1...Ra5
- 2.Qxd7#
- 1...Rb5
- 2.Qxd7#
- 1...Rc5
- 2.Qxd7#
- 1...Re5
- 2.Qxd7#
- 1...Rf5
- 2.Qxd7#
- 1...Rg5
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rd6
- 2.Qc4#
- 1...Bf5
- 2.Qxd5#
- 1...Bg6
- 2.Qxd5#
- 1...Bh7
- 2.Qxd5#
- 1...d6
- 2.Qe8#
- 2.Qd7#
- 1...h2!
- 1...Sb6
- 1.Qe6+?
- 1...Rd6
- 2.Qc4#
- 2.Qxd6#
- 1...d6
- 2.Qd7#
- 2.Qe8#
- 1...dxe6!
- 1...Rd6
- 1.Qg6+?
- 1...Rd6
- 2.Qxd6#
- 1...d6
- 2.Qe8#
- 1...Bxg6!
- 1...Rd6
- 1.Qf6+?
- 1...Rd6
- 2.Qxd6#
- 1...d6!
- 1...Rd6
- 1.Ke1?
- Keys
- 1.Bd6!
- threat
- 2.Qxd7#
- 1...Kxd6
- 2.Qf6#
- 1...Rxd6
- 2.Qc4#
- 1...Sb6
- 2.Rxb6#
- 1...Bf5
- 2.Qxd5#
- 1...Sc7
- 2.Rb6#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- R(f);N_GUARD::QAB1(G),XP(h)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- R(f);N_GUARD::QAB1(G),XP(h)
- S(i);N_GUARD::R1(F),XS(i)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F)
- Refutation
- P(b);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- R(f);N_GUARD::QAB1(G),XP(h)
- S(i);N_GUARD::R1(F),XS(i)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F)
- Refutation
- P(b);
- Try
- B(C);
- Vars
- R(f);N_GUARD::QAB1(G),XP(h)
- S(i);N_GUARD::R1(F),XS(i)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- R(f);N_GUARD::QAB1(G),XP(h)
- S(i);N_GUARD::R1(F),XS(i)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- R(f);N_GUARD,XB(C)::QAB1(G),XP(h)
- S(i);N_GUARD::R1(F),XS(i)
- R(f);N_GUARD::QAB1(G),XP(h)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);N_GUARD::R1(F)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- R(f);N_GUARD::QAB1(G),XP(h)
- R(f);OGATE::QAR2(G)
- B(e);N_GUARD::QAB1(G),XR(f)
- Refutation
- P(c);
- Try
- Q(G);CHECK
- Refutation
- P(h);XQ(G)
- Try
- Q(G);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAR1(G),XR(f)
- P(h);OGATEB,P_SPINP(h)::QAB(G)
- Refutation
- B(e);XQ(G)
- Try
- Q(G);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAR1(G),XR(f)
- Refutation
- P(h);P_SPINP(h)
- Try
- Actual
- B(C);
- Threat
- QAB1(G),XP(h)
- Vars
- K(g);OGATEB,P-FLIGHT,XB(C)::QAR2(G)
- R(f);OGATE,SBLOCK,XB(C)::QAR2(G)
- S(i);N_GUARD::R1(F),XS(i)
- B(e);N_GUARD::QAB1(G),XR(f)
- S(i);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).