MESON Chess Problem Database
Problem Display
PID: 103666 (4N3/4pB2/4r3/2P1kp2/1R2p3/2P1N1R1/3B2P1/6K1 w - - 0 1)
Narayanan, Chithathuz Gopatan Sathya
Northwest Chess, 1977
#2
10 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Ra6
- Tries
- 1.Kf1?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Kh2?
- 1...Kf4
- 2.Sg4#
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Rh6+!
- 1...Kf4
- 1.Bc1?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Bg8?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rh3?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rh5#
- 1...Kf4!
- 1...Ra6
- 1.Rg4?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...fxg4!
- 1...Ra6
- 1.Rg5?
- threat
- 2.Rxf5#
- 1...Rf6
- 2.Sc4#
- 2.Sg4#
- 1...Kf4!
- threat
- 1.Rg6?
- 1...Rxg6
- 2.Sc4#
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 2.Rxe6#
- 1...Kf4!
- 1...Rxg6
- 1.Rg7?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rg8?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rb1?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rb2?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rb3?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Ra4?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rd4?
- threat
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 2.Rd5#
- 1...Kf4!
- threat
- 1.Rb5?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 2.c6#
- 1...Kf4!
- 1...Ra6
- 1.Rb6?
- 1...Rxb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 2.Rxe6#
- 1...Kf4!
- 1...Rxb6
- 1.Rb7?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Rb8?
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4!
- 1...Ra6
- 1.Kf1?
- Keys
- 1.Kf2!
- 1...Kf4
- 2.Sg4#
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc6
- 2.Sc4#
- 1...Rd6
- 2.Sc4#
- 1...Rf6
- 2.Sc4#
- 1...Rg6
- 2.Sc4#
- 1...Rh6
- 2.Sc4#
- 1...f4
- 2.Rg5#
- 1...Kf4
- 1.Kf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- K(A);S_FLIGHT
- Vars
- K(b);P_SPINP(a),S_FLIGHT::B(B)+S(E)
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- R(d);CHECK
- Try
- B(B);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- B(I);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(F);
- Vars
- R(d);::S(E)
- R(d);P_PINP(C)::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(F);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- P(c);XR(F)
- Try
- R(F);P_PINP(c)
- Threat
- R1(F),XP(c)
- Refutation
- K(b);N_SPINP(c),P_SPINP(a),S_FLIGHT
- Try
- R(F);
- Vars
- R(d);P_PINP(C),XR(F)::S(E)
- R(d);::S(E)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(F);
- Vars
- R(d);::S(E)
- R(d);P_PINP(C)::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(F);
- Vars
- R(d);::S(E)
- R(d);P_PINP(C)::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(G);
- Threat
- S(E)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);XR(G)::S(E)
- R(d);::S(E)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(G);
- Vars
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(F)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- K(A);S_FLIGHT
- Vars
- K(b);P_SPINP(a),S_FLIGHT::B(B)+S(E)
- R(d);::S(E)
- P(c);OGATEB,SBLOCK::R(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).