MESON Chess Problem Database
Problem Display
PID: 144986 (1K1n4/r7/4p3/2R1P3/1k1BB2R/p7/P5p1/1r2nN1N w - - 0 1)
Dobrila, Arsen
5th HM.=, Problem (Zagreb), 1967
#2
9 + 8
SOLUTION
- SOUND
- Tries
- 1.Bg1?
- threat
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ka4+
- 2.Bxb1#
- 1...Rb7+
- 2.Bxb7#
- 1...Ra8+
- 2.Bxa8#
- 1...Sc6+
- 2.Bxc6#
- 1...gxf1S
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxf1B
- 2.Bd3#
- 1...gxf1R
- 2.Bf3#
- 1...gxh1Q
- 2.Bxh1#
- 1...gxh1S
- 2.Bxb1#
- 2.Bxh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxh1B
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 1...gxh1R
- 2.Bxh1#
- 1...Ra1
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rc1
- 2.Bc2#
- 1...Rd1
- 2.Bd3#
- 1...Rb2
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rb3
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rd7
- 2.Bd5#
- 1...Rf7
- 2.Bf5#
- 1...Rg7
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Sc2
- 2.Bxc2#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bxf3#
- 1...Sb7
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bxb7#
- 2.Bh7#
- 1...gxf1Q!
- threat
- 1.Bc3+?
- 1...Ka4+
- 2.Bxb1#
- 1...Kxc5+!
- 1...Ka4+
- 1.Be3?
- threat
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ka4+
- 2.Bxb1#
- 1...Rb7+
- 2.Bxb7#
- 1...Ra8+
- 2.Bxa8#
- 1...Sc6+
- 2.Bxc6#
- 1...gxf1S
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxf1B
- 2.Bd3#
- 1...gxf1R
- 2.Bf3#
- 1...gxh1Q
- 2.Bxh1#
- 1...gxh1S
- 2.Bxb1#
- 2.Bxh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxh1B
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 1...gxh1R
- 2.Bxh1#
- 1...g1Q
- 2.Bg2#
- 1...g1S
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...g1B
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...g1R
- 2.Bg2#
- 1...Ra1
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rc1
- 2.Bc2#
- 1...Rd1
- 2.Bd3#
- 1...Rb2
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rb3
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rd7
- 2.Bd5#
- 1...Rf7
- 2.Bf5#
- 1...Rg7
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Sc2
- 2.Bxc2#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bxf3#
- 1...Sb7
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bxb7#
- 2.Bh7#
- 1...gxf1Q!
- threat
- 1.Bg1?
- Keys
- 1.Bf2!
- threat
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ka4+
- 2.Bxb1#
- 1...Rb7+
- 2.Bxb7#
- 1...Ra8+
- 2.Bxa8#
- 1...Sc6+
- 2.Bxc6#
- 1...gxf1Q
- 2.Bd3#
- 1...gxf1S
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxf1B
- 2.Bd3#
- 1...gxf1R
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxh1Q
- 2.Bxh1#
- 1...gxh1S
- 2.Bxb1#
- 2.Bxh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxh1B
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 1...gxh1R
- 2.Bxh1#
- 1...g1Q
- 2.Bg2#
- 1...g1S
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...g1B
- 2.Bxb1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...g1R
- 2.Bg2#
- 1...Ra1
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rc1
- 2.Bc2#
- 1...Rd1
- 2.Bd3#
- 1...Rb2
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rb3
- 2.Bb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Rd7
- 2.Bd5#
- 1...Rf7
- 2.Bf5#
- 1...Rg7
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Sc2
- 2.Bxc2#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bxf3#
- 1...Sb7
- 2.Bxb1#
- 2.Bc2#
- 2.Bxg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bxb7#
- 2.Bh7#
- threat
- 1.Bf2!
There are these afters: 133087
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 19
- REMOVED MATES = 0
- Sets
- Tries
- Try
- B(D);
- Threat
- DUALS(12)
- Vars
- K(e);CHECK,P-FLIGHT::R(F)+B(E),XR(a)
- R(g);CHECK::R(F)+B(E),XR(g)
- S(h);CHECK::R(F)+B(E),XS(h)
- P(c);XS(A)::R(F)+B(E)
- P(c);OGATE,XS(B)::R(F)+B(E),XQ(c)
- P(c);OGATE,XS(B)::R(F)+B(E),XR(c)
- R(a);::R(F)+B(E)
- R(g);::R(F)+B(E)
- R(g);::R(F)+B(E),XR(g)
- S(b);::R(F)+B(E),XS(b)
- Refutation
- P(c);XS(A)
- Try
- B(D);CHECK
- Vars
- K(e);CHECK,P-FLIGHT::R(F)+B(E),XR(a)
- Refutation
- K(e);CHECK,S_FLIGHT,XR(G)
- Try
- B(D);
- Threat
- DUALS(12)
- Vars
- K(e);CHECK,P-FLIGHT::R(F)+B(E),XR(a)
- R(g);CHECK::R(F)+B(E),XR(g)
- S(h);CHECK::R(F)+B(E),XS(h)
- P(c);XS(A)::R(F)+B(E)
- P(c);OGATE,XS(B)::R(F)+B(E),XQ(c)
- P(c);OGATE,XS(B)::R(F)+B(E),XR(c)
- P(c);::R(F)+B(E)
- R(a);::R(F)+B(E)
- R(g);::R(F)+B(E)
- R(g);::R(F)+B(E),XR(g)
- S(b);::R(F)+B(E),XS(b)
- Refutation
- P(c);XS(A)
- Try
- Actual
- B(D);
- Threat
- DUALS(12)
- Vars
- K(e);CHECK,P-FLIGHT::R(F)+B(E),XR(a)
- R(g);CHECK::R(F)+B(E),XR(g)
- S(h);CHECK::R(F)+B(E),XS(h)
- P(c);XS(A)::R(F)+B(E)
- P(c);OGATE,XS(B)::R(F)+B(E),XQ(c)
- P(c);OGATE,XS(B)::R(F)+B(E),XR(c)
- P(c);::R(F)+B(E)
- R(a);::R(F)+B(E)
- R(g);::R(F)+B(E)
- R(g);::R(F)+B(E),XR(g)
- S(b);::R(F)+B(E),XS(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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