MESON Chess Problem Database
Problem Display
PID: 203500 (3Nr3/1p2pB2/1B1pr1Np/3kb1nR/2p1n1K1/6p1/6Q1/8 w - - 0 1)
Bonavia-Hunt, Rev Noel Aubrey
4th Prize, Good Companions, 1924
#2
7 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Ba1
- 2.Bxe6#
- 1...Bb2
- 2.Bxe6#
- 1...Bc3
- 2.Bxe6#
- 1...Bd4
- 2.Bxe6#
- 1...Bf4
- 2.Bxe6#
- 1...Bf6
- 2.Bxe6#
- 1...Bg7
- 2.Bxe6#
- 1...Bh8
- 2.Bxe6#
- 1...Sf3
- 2.Sf4#
- 2.Bxe6#
- 1...Sh3
- 2.Bxe6#
- 1...Sxf7
- 2.Sf4#
- 1...Sh7
- 2.Sf4#
- 2.Bxe6#
- 1...c3
- 2.Qa2#
- 1...Rxd8
- Tries
- 1.Kh4?
- 1...Rxd8
- 2.Sxe7#
- 1...Sxf7
- 2.Sf4#
- 1...c3
- 2.Qa2#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Ba1
- 2.Bxe6#
- 1...Bb2
- 2.Bxe6#
- 1...Bc3
- 2.Bxe6#
- 1...Bd4
- 2.Bxe6#
- 1...Bf4
- 2.Bxe6#
- 1...Bf6
- 2.Bxe6#
- 1...Bg7
- 2.Bxe6#
- 1...Bh8
- 2.Bxe6#
- 1...Sh3
- 2.Bxe6#
- 1...Sh7
- 2.Sf4#
- 2.Bxe6#
- 1...Sf3+!
- 1...Rxd8
- 1.Bg8?
- 1...Rxd8
- 2.Sxe7#
- 1...c3
- 2.Qa2#
- 1...Rf8
- 2.Sxe7#
- 1...Ba1
- 2.Bxe6#
- 1...Bb2
- 2.Bxe6#
- 1...Bc3
- 2.Bxe6#
- 1...Bd4
- 2.Bxe6#
- 1...Bf4
- 2.Bxe6#
- 1...Bf6
- 2.Bxe6#
- 1...Bg7
- 2.Bxe6#
- 1...Bh8
- 2.Bxe6#
- 1...Sf3
- 2.Sf4#
- 2.Bxe6#
- 1...Sh3
- 2.Bxe6#
- 1...Sf7
- 2.Sf4#
- 1...Sh7
- 2.Sf4#
- 2.Bxe6#
- 1...Rxg8!
- 1...Rxd8
- 1.Rxg5?
- threat
- 2.Sf4#
- 2.Bxe6#
- 1...Rxd8
- 2.Sxe7#
- 1...hxg5
- 2.Bxe6#
- 1...c3
- 2.Bxe6#
- 2.Qa2#
- 1...h5+!
- threat
- 1.Qxe4+?
- 1...Sxe4
- 2.Sf4#
- 2.Bxe6#
- 1...Kxe4!
- 1...Sxe4
- 1.Qd2+?
- 1...Bd4
- 2.Bxe6#
- 2.Qxd4#
- 1...Sxd2!
- 1...Bd4
- 1.Kh4?
- Keys
- 1.Kf5!
- 1...Rxd8
- 2.Sxe7#
- 1...Sxf7
- 2.Qxe4#
- 1...c3
- 2.Qa2#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Ba1
- 2.Sf4#
- 1...Bb2
- 2.Sf4#
- 1...Bc3
- 2.Sf4#
- 1...Bd4
- 2.Sf4#
- 1...Bf4
- 2.Sxf4#
- 1...Bf6
- 2.Sf4#
- 1...Bg7
- 2.Sf4#
- 1...Bh8
- 2.Sf4#
- 1...Sf3
- 2.Bxe6#
- 1...Sh3
- 2.Bxe6#
- 2.Qxe4#
- 1...Sh7
- 2.Bxe6#
- 2.Qxe4#
- 1...Rxd8
- 1.Kf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(l);N_GUARD,XS(G)::S(E),XP(k)
- R(l);N_GUARD::S(E),XP(k)
- B(e);S_CUTS(f)::B(F),XR(h)
- S(f);N_GUARD,P_SPINB(e)::B(F),XR(h)
- S(f);N_SPINR(h),P_SPINB(e),XB(F)::S(E)
- P(b);OGATEB::QAB(A)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(l);N_GUARD,XS(G)::S(E),XP(k)
- S(f);N_SPINR(h),P_SPINB(e),XB(F)::S(E)
- P(b);OGATEB::QAB(A)
- R(l);N_GUARD::S(E),XP(k)
- B(e);S_CUTS(f)::B(F),XR(h)
- S(f);N_GUARD,P_SPINB(e)::B(F),XR(h)
- Refutation
- S(f);CHECK,N_SPINS(c),P_SPINB(e)
- Try
- B(F);
- Vars
- R(l);N_GUARD,XS(G)::S(E),XP(k)
- P(b);OGATEB::QAB(A)
- R(l);N_GUARD::S(E),XP(k)
- B(e);S_CUTS(f)::B(F),XR(h)
- S(f);N_GUARD,P_SPINB(e)::B(F),XR(h)
- S(f);N_SPINR(h),P_SPINB(e)::S(E)
- Refutation
- R(l);N_SPINR(h),XB(F)
- Try
- R(C);P_PINB(e),XS(f)
- Threat
- DUALS(2)
- Vars
- R(l);N_GUARD,XS(G)::S(E),XP(k)
- P(i);N_SPINB(e),XR(C)::B(F),XR(h)
- Refutation
- P(i);CHECK
- Try
- Q(A);CHECK,XS(c)
- Refutation
- K(d);N_SPINR(h),S_FLIGHT,XQ(A)
- Try
- Q(A);CHECK,N_PINS(c)
- Refutation
- S(c);XQ(A)
- Try
- Actual
- K(B);S_FLIGHT
- Vars
- R(l);N_GUARD,XS(G)::S(E),XP(k)
- S(f);N_GUARD,N_SPINR(h),XB(F)::QAB1(A),XS(c)
- P(b);OGATEB::QAB(A)
- R(l);N_GUARD,P_PINB(F)::S(E),XP(k)
- R(l);N_GUARD::S(E),XP(k)
- B(e);N_GUARD::S(E)
- B(e);N_GUARD::S(E),XB(e)
- S(f);N_GUARD,N_SPINS(c)::B(F),XR(h)
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).