MESON Chess Problem Database
Problem Display
PID: 41999 (1r2Q3/8/8/N2RBR1p/r3kN1K/4p3/2P5/1B6 w - - 0 1)
Barnes, Barry Peter
Sunday Citizen, 1966
#2
9 + 5
| 4199 | Barnes about Chess Problems | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Kxf5
- 2.Qg6#
- 1...Kxf5
- Tries
- 1.Kg3?
- threat
- 2.Bxb8#
- 1...Kxf5
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bg7#
- 2.Bh8#
- 2.Qg6#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c3#
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 2.cxb3#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c3#
- 2.c4#
- 1...Rc8
- 2.c3#
- 2.c4#
- 1...Rd8
- 2.c3#
- 2.c4#
- 1...h4+!
- threat
- 1.Sg2?
- threat
- 2.Bxb8#
- 1...Kxf5+
- 2.Bd4#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c4#
- 1...Rc8
- 2.c4#
- 1...Rd8
- 2.c4#
- 1...Kxd5+!
- threat
- 1.Sh3?
- threat
- 2.Bxb8#
- 1...Kxf5+
- 2.Bd4#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c4#
- 1...Rc8
- 2.c4#
- 1...Rd8
- 2.c4#
- 1...Kxd5+!
- threat
- 1.Sxh5?
- threat
- 2.Bxb8#
- 1...Kxf5+
- 2.Bd4#
- 2.Bf4#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c4#
- 1...Rc8
- 2.c4#
- 1...Rd8
- 2.c4#
- 1...Kxd5+!
- threat
- 1.Sg6?
- threat
- 2.Bxb8#
- 1...Kxf5+
- 2.Bd4#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c4#
- 1...Rc8
- 2.c4#
- 1...Rd8
- 2.c4#
- 1...Kxd5+!
- threat
- 1.Bd4+?
- 1...Kf3
- 2.Qxe3#
- 1...Rxe8!
- 1...Kf3
- 1.Kg3?
- Keys
- 1.Se2!
- threat
- 2.Bxb8#
- 1...Kxd5+
- 2.Bf4#
- 1...Kxf5+
- 2.Bd4#
- 1...Rxb1
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rxe8
- 2.c4#
- 1...Rb2
- 2.Bxb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb3
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rbb4
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb5
- 2.Ba1#
- 2.Bb2#
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...Rb6
- 2.Bd6#
- 1...Rb7
- 2.Bc7#
- 1...Ra8
- 2.Bb8#
- 2.c4#
- 1...Rc8
- 2.c4#
- 1...Rd8
- 2.c4#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- K(c);OGATEB,P_PINS(C),S_FLIGHT,XR(H)::QAB1(I)
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- R(e);N_GUARD::QAR(I)+B(G)
- Refutation
- P(d);CHECK
- Try
- S(C);
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- K(c);CHECK,S_FLIGHT,XR(H)::R(F)+B(G)
- R(e);N_GUARD,XQ(I)::B(A)+P(B)
- R(e);N_GUARD::QAR(I)+B(G)
- R(e);N_GUARD::B(A)+P(B)
- Refutation
- K(c);CHECK,S_FLIGHT,XR(F)
- Try
- S(C);
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- K(c);CHECK,S_FLIGHT,XR(H)::R(F)+B(G)
- R(e);N_GUARD,XQ(I)::B(A)+P(B)
- R(e);N_GUARD::QAR(I)+B(G)
- R(e);N_GUARD::B(A)+P(B)
- Refutation
- K(c);CHECK,S_FLIGHT,XR(F)
- Try
- S(C);XP(d)
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- R(e);N_GUARD,XQ(I)::B(A)+P(B)
- R(e);N_GUARD::QAR(I)+B(G)
- R(e);N_GUARD::B(A)+P(B)
- Refutation
- K(c);CHECK,S_FLIGHT,XR(F)
- Try
- S(C);
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- K(c);CHECK,S_FLIGHT,XR(H)::R(F)+B(G)
- R(e);N_GUARD,XQ(I)::B(A)+P(B)
- R(e);N_GUARD::QAR(I)+B(G)
- R(e);N_GUARD::B(A)+P(B)
- Refutation
- K(c);CHECK,S_FLIGHT,XR(F)
- Try
- B(G);CHECK
- Vars
- K(c);OGATE,S_FLIGHT::QAR1(I),XP(a)
- Refutation
- R(e);XQ(I)
- Try
- Actual
- S(C);
- Threat
- QAR(I)+B(G),XR(e)
- Vars
- K(c);CHECK,S_FLIGHT,XR(F)::R(H)+B(G)
- K(c);CHECK,S_FLIGHT,XR(H)::R(F)+B(G)
- R(e);N_GUARD,XQ(I)::B(A)+P(B)
- R(e);N_GUARD::QAR(I)+B(G)
- R(e);N_GUARD::B(A)+P(B)
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).