MESON Chess Problem Database
Problem Display
PID: 103664 (1N2Nr2/Q1Kp1p2/4k1r1/R3B3/4R3/8/2B5/7q w - - 0 1)
Narayanan, Chithathuz Gopatan Sathya
Northwest Chess, 1976
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Bd6#
- 1...Ke7
- 2.Bd6#
- 2.Bf6#
- 1...Qa1
- 2.Bxa1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 1...Qb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qc1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qd1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qf1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qg1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qh2
- 2.Bxh2#
- 2.Bg3#
- 2.Bf4#
- 1...Qh3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qh4
- 2.Bf4#
- 1...Qh6
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qh7
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qh8
- 2.Bf6#
- 2.Bg7#
- 2.Bxh8#
- 1...Rg2
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Kf5
- Tries
- 1.Kc8?
- threat
- 2.Qxd7#
- 1...Kf5
- 2.Bd6#
- 1...Ke7
- 2.Bd6#
- 2.Bf6#
- 2.Qxd7#
- 1...Qd1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bh8#
- 1...d5
- 2.Qd7#
- 1...d6
- 2.Qd7#
- 1...Rxe8+!
- threat
- 1.Qb6+?
- 1...Kf5
- 2.Bd6#
- 1...Ke7
- 2.Bd6#
- 2.Bf6#
- 1...d6!
- 1...Kf5
- 1.Qa6+?
- 1...Kf5
- 2.Bd6#
- 1...Ke7
- 2.Bd6#
- 2.Bf6#
- 1...d6!
- 1...Kf5
- 1.Kc8?
- Keys
- 1.Kb6!
- threat
- 2.Qxd7#
- 1...Kf5+
- 2.Bd6#
- 1...Ke7+
- 2.Bf6#
- 1...Qb1+
- 2.Bb2#
- 1...Qg1+
- 2.Bd4#
- 1...Qd1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bh8#
- 1...d5
- 2.Qd7#
- 1...d6
- 2.Qd7#
- threat
- 1.Kb6!
This is a version of 12210
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- K(b);S_FLIGHT::R(C)+B(D)
- Q(a);N_GUARD::R(B)+B(D)
- Tries
- Try
- K(F);P-FLIGHT,P_SPINS(H)
- Threat
- QAB1(E),XP(d)
- Vars
- K(b);S_FLIGHT::R(C)+B(D)
- P(d);::QAB1(E)
- Refutation
- R(f);CHECK,XS(H)
- Try
- Q(E);CHECK
- Vars
- K(b);S_FLIGHT::R(C)+B(D)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(E);CHECK
- Vars
- K(b);S_FLIGHT::R(C)+B(D)
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- K(F);S_FLIGHT
- Threat
- QAB1(E),XP(d)
- Vars
- K(b);CHECK,S_FLIGHT::R(C)+B(D)
- K(b);CHECK,P-FLIGHT,P_SPINP(d)::R(B)+B(D),DCHECK
- Q(a);CHECK,N_GUARD::R(B)+B(D)
- P(d);::QAB1(E)
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).