MESON Chess Problem Database
Problem Display
PID: 221323 (2rr2b1/4P3/Q4R2/2Nkn1nR/pP6/2P4p/1p4NB/2bB2K1 w - - 0 1)
Bonavia-Hunt, Rev Noel Aubrey
The Problemist, 1944
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Rxd6#
- 1...Re8
- 2.Rd6#
- 1...Rf8
- 2.Rd6#
- 1...Be3+
- 2.Sxe3#
- 1...Bf4
- 2.Sxf4#
- 1...Sd3
- 2.Bf3#
- 2.Qxd3#
- 1...Sef3+
- 2.Bxf3#
- 1...Sc4
- 2.Bf3#
- 1...Sg4
- 2.Bf3#
- 2.Qd3#
- 1...Sc6
- 2.Bf3#
- 1...Sg6
- 2.Bf3#
- 2.Qd3#
- 1...Sd7
- 2.Bf3#
- 2.Rd6#
- 2.Qd3#
- 1...Sef7
- 2.Bf3#
- 2.Qd3#
- 2.Qe6#
- 1...Sgf3+
- 2.Bxf3#
- 1...Se4
- 2.Rxe5#
- 2.Qd3#
- 1...Se6
- 2.Bf3#
- 2.Rxe5#
- 1...Sgf7
- 2.Bf3#
- 2.Qd3#
- 2.Qe6#
- 1...Sh7
- 2.Bf3#
- 2.Rxe5#
- 2.Qd3#
- 1...Rd6
- Tries
- 1.Bb3+?
- 1...Sc4
- 2.Bxc4#
- 2.Rf5#
- 2.Qxc4#
- 1...axb3!
- 1...Sc4
- 1.Rxg5?
- threat
- 2.Bf3#
- 2.Rxe5#
- 2.Qd3#
- 1...Be3+
- 2.Sxe3#
- 1...b1Q
- 2.Rxe5#
- 1...b1B
- 2.Rxe5#
- 1...Rd6
- 2.Bf3#
- 2.Rxe5#
- 2.Rxd6#
- 1...Bf4
- 2.Sxf4#
- 2.Bf3#
- 2.Qd3#
- 1...Be6
- 2.Bf3#
- 2.Rxe5#
- 2.Qxe6#
- 1...Bh7
- 2.Rxe5#
- 2.Qe6#
- 1...Bxg5!
- threat
- 1.Qc4+?
- 1...Sxc4
- 2.Bf3#
- 1...Kxc4!
- 1...Sxc4
- 1.exd8Q+?
- 1...Sd7
- 2.Bf3#
- 2.Rf5#
- 2.Rd6#
- 2.Qd3#
- 2.Qxd7#
- 1...Rxd8!
- 1...Sd7
- 1.exd8R+?
- 1...Sd7
- 2.Bf3#
- 2.Rf5#
- 2.Rd6#
- 2.Rxd7#
- 2.Qd3#
- 1...Rxd8!
- 1...Sd7
- 1.e8Q?
- threat
- 2.Qxe5#
- 1...Be3+
- 2.Sxe3#
- 1...Sef3+
- 2.Bxf3#
- 1...Sgf3+
- 2.Bxf3#
- 1...Rxe8
- 2.Rd6#
- 1...Bf4
- 2.Sxf4#
- 1...Sd3
- 2.Bf3#
- 2.Qxd3#
- 2.Qe4#
- 1...Sc4
- 2.Bf3#
- 2.Qe4#
- 1...Sg4
- 2.Bf3#
- 2.Qd3#
- 2.Qe4#
- 1...Sc6
- 2.Bf3#
- 2.Qe4#
- 1...Sg6
- 2.Bf3#
- 2.Qd3#
- 2.Qe4#
- 1...Sd7
- 2.Bf3#
- 2.Rd6#
- 2.Qd3#
- 2.Qe4#
- 1...Sef7
- 2.Bf3#
- 2.Qd3#
- 2.Qae6#
- 2.Qe4#
- 2.Qee6#
- 1...Se6
- 2.Bf3#
- 2.Rxe5#
- 1...Sgf7
- 2.Bf3#
- 2.Qd3#
- 2.Qae6#
- 2.Qee6#
- 1...Be6!
- threat
- 1.e8R?
- threat
- 2.Rxe5#
- 1...Be3+
- 2.Sxe3#
- 1...Sef3+
- 2.Bxf3#
- 1...Sgf3+
- 2.Bxf3#
- 1...Rxe8
- 2.Rd6#
- 1...Bf4
- 2.Sxf4#
- 1...Sd3
- 2.Bf3#
- 2.Qxd3#
- 1...Sc4
- 2.Bf3#
- 1...Sg4
- 2.Bf3#
- 2.Qd3#
- 1...Sc6
- 2.Bf3#
- 1...Sg6
- 2.Bf3#
- 2.Qd3#
- 1...Sd7
- 2.Bf3#
- 2.Rd6#
- 2.Qd3#
- 1...Sef7
- 2.Bf3#
- 2.Qd3#
- 2.Qe6#
- 1...Se6
- 2.Bf3#
- 2.Rxe5#
- 1...Sgf7
- 2.Bf3#
- 2.Qd3#
- 2.Qe6#
- 1...Be6!
- threat
- 1.Bb3+?
- Keys
- 1.Rf5!
- threat
- 2.Rxe5#
- 1...Be3+
- 2.Sxe3#
- 1...Sf3+
- 2.Bxf3#
- 1...Rc6
- 2.Qd3#
- 1...Bf4
- 2.Sxf4#
- 1...Sf7
- 2.Bf3#
- 2.Qe6#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(i);N_GUARD::R1(J),XR(i)
- R(i);N_GUARD::R1(J)
- B(a);CHECK,N_GUARD::S(C),XB(a)
- B(a);N_GUARD::S(C),XB(a)
- S(f);CHECK,N_GUARD,P_SPINS(g)::B(A),XS(f)
- S(f);N_GUARD,P_SPINS(g)::B(A)
- S(g);CHECK,N_GUARD,P_SPINS(f)::B(A),XS(g)
- Tries
- Try
- B(A);CHECK
- Refutation
- P(d);XB(A)
- Try
- R(H);P_PINS(f),XS(g)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::S(C),XB(a)
- P(b);::R1(H),XS(f)
- Refutation
- B(a);N_SPINS(f),XR(H)
- Try
- Q(I);CHECK
- Vars
- S(f);P_SPINS(g),SBLOCK,XQ(I)::B(A)
- Refutation
- K(e);S_FLIGHT,XQ(I)
- Try
- P(K);CHECK,XR(i)
- Refutation
- R(h);XQ(K)
- Try
- P(K);CHECK,XR(i)
- Refutation
- R(h);XR(K)
- Try
- P(K);
- Threat
- QAR1(K),XS(f)
- Vars
- B(a);CHECK,N_GUARD::S(C),XB(a)
- S(f);CHECK,N_GUARD,P_SPINS(g)::B(A),XS(f)
- S(g);CHECK,N_GUARD,P_SPINS(f)::B(A),XS(g)
- R(i);N_GUARD,XQ(K)::R1(J)
- B(a);N_GUARD::S(C),XB(a)
- Refutation
- B(j);
- Try
- P(K);
- Threat
- R1(K),XS(f)
- Vars
- B(a);CHECK,N_GUARD::S(C),XB(a)
- S(f);CHECK,N_GUARD,P_SPINS(g)::B(A),XS(f)
- S(g);CHECK,N_GUARD,P_SPINS(f)::B(A),XS(g)
- R(i);N_GUARD,XR(K)::R1(J)
- B(a);N_GUARD::S(C),XB(a)
- S(f);N_GUARD,P_SPINS(g)::B(A)
- Refutation
- B(j);
- Try
- Actual
- R(J);P_PINS(f)
- Threat
- R1(J),XS(f)
- Vars
- B(a);CHECK,N_GUARD::S(C),XB(a)
- S(g);CHECK,N_GUARD::B(A),XS(g)
- R(h);SBLOCK::QAR2(I)
- B(a);N_GUARD::S(C),XB(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).