MESON Chess Problem Database
Problem Display
PID: 99452 (8/3NnQ2/3p4/1p6/1RppkBB1/6R1/2P5/4K1n1 w - - 0 1)
Zappas, Byron
Magyar Sakkelet, 1980
#2
8 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Se2
- 2.Bf3#
- 1...Sf3+
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Sd5
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...c3
- 2.Re3#
- 1...d5
- 2.Sc5#
- 1...Se2
- Tries
- 1.Kd1?
- 1...Sf5
- 2.Qxf5#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Sd5
- 2.Qf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...c3
- 2.Re3#
- 1...d5
- 2.Sc5#
- 1...d3!
- 1...Sf5
- 1.Kf1?
- 1...Sf5
- 2.Qxf5#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Sd5
- 2.Qf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...c3
- 2.Re3#
- 1...d5
- 2.Sc5#
- 1...d3!
- 1...Sf5
- 1.Bc1?
- threat
- 2.Qe6#
- 1...Sf3+
- 2.Bxf3#
- 2.Qxf3#
- 1...Sc6
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Bf5#
- 2.Qf5#
- 1...d3!
- threat
- 1.Bd2?
- threat
- 2.Qe6#
- 1...Sf3+
- 2.Bxf3#
- 2.Qxf3#
- 1...Sc6
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Bf5#
- 2.Qf5#
- 1...d3!
- threat
- 1.Be3?
- threat
- 2.Qe6#
- 1...Sf3+
- 2.Qxf3#
- 1...Sc6
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Bf5#
- 2.Qf5#
- 1...dxe3!
- threat
- 1.Bg5?
- threat
- 2.Qe6#
- 1...Sf3+
- 2.Bxf3#
- 2.Qxf3#
- 1...Sc6
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Bf5#
- 2.Qf5#
- 1...d3!
- threat
- 1.Bxd6?
- threat
- 2.Sc5#
- 2.Sf6#
- 2.Qe6#
- 1...Sf3+
- 2.Qxf3#
- 1...Sd5
- 2.Sc5#
- 2.Bf5#
- 2.Qe6#
- 2.Qg6#
- 2.Qf5#
- 2.Qh7#
- 1...Sc6
- 2.Sc5#
- 2.Sf6#
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Sc5#
- 2.Sf6#
- 2.Bf5#
- 2.Qf5#
- 1...Sg8
- 2.Sc5#
- 2.Bf5#
- 2.Qe6#
- 2.Qf5#
- 1...d3!
- threat
- 1.Bh6?
- threat
- 2.Qe6#
- 1...Sf3+
- 2.Bxf3#
- 2.Qxf3#
- 1...Sc6
- 2.Bf5#
- 2.Qf5#
- 1...Sg6
- 2.Bf5#
- 2.Qf5#
- 1...d3!
- threat
- 1.Rd3?
- 1...Sf3+
- 2.Bxf3#
- 1...Sf5
- 2.Qxf5#
- 1...d5
- 2.Sc5#
- 1...Se2
- 2.Bf3#
- 1...Sh3
- 2.Bf3#
- 1...Sd5
- 2.Qf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...c3
- 2.Re3#
- 2.Rdxd4#
- 2.Rbxd4#
- 1...cxd3!
- 1...Sf3+
- 1.Rxc4?
- threat
- 2.Re3#
- 1...Sf3+
- 2.Bxf3#
- 1...Sf5
- 2.Qxf5#
- 1...Sd5
- 2.Qf5#
- 1...bxc4!
- threat
- 1.Rxb5?
- 1...Sf3+
- 2.Bxf3#
- 1...Sf5
- 2.Qxf5#
- 1...d3
- 2.Qxc4#
- 1...Se2
- 2.Bf3#
- 1...Sh3
- 2.Bf3#
- 1...Sd5
- 2.Qf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...d5
- 2.Sc5#
- 1...c3!
- 1...Sf3+
- 1.Kd1?
- Keys
- 1.Be5!
- 1...Sf3+
- 2.Qxf3#
- 1...dxe5
- 2.Sc5#
- 1...d5
- 2.Qf4#
- 1...Se2
- 2.Qf3#
- 1...Sh3
- 2.Qf3#
- 1...Sd5
- 2.Bf5#
- 2.Qg6#
- 2.Qf5#
- 2.Qh7#
- 1...Sf5
- 2.Bxf5#
- 1...Sc6
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sc8
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 1...c3
- 2.Rxd4#
- 1...d3
- 2.cxd3#
- 1...Sf3+
- 1.Be5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 10
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::B(F)
- S(a);CHECK,N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(b);P_SPINP(c)::R1(C)
- P(f);N_GUARD::S(G)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(g);N_GUARD::QAB1(H),XS(g)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H)
- P(b);P_SPINP(c)::R1(C)
- P(f);N_GUARD::S(G)
- Refutation
- P(c);P_SPINP(b)
- Try
- K(A);P-FLIGHT
- Vars
- S(g);N_GUARD::QAB1(H),XS(g)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H)
- P(b);P_SPINP(c)::R1(C)
- P(f);N_GUARD::S(G)
- Refutation
- P(c);P_SPINP(b)
- Try
- B(E);
- Threat
- QAR2(H)
- Refutation
- P(c);P_SPINP(b)
- Try
- B(E);
- Threat
- QAR2(H)
- Refutation
- P(c);P_SPINP(b)
- Try
- B(E);
- Threat
- QAR2(H)
- Vars
- S(a);CHECK,N_GUARD::QAB1(H),XS(a)
- Refutation
- P(c);P_SPINP(b),XB(E)
- Try
- B(E);
- Threat
- QAR2(H)
- Refutation
- P(c);P_SPINP(b)
- Try
- B(E);XP(f)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::QAB1(H),XS(a)
- Refutation
- P(c);P_SPINP(b)
- Try
- B(E);
- Threat
- QAR2(H)
- Refutation
- P(c);P_SPINP(b)
- Try
- R(C);
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(f);N_GUARD::S(G)
- S(a);N_GUARD::B(F)
- S(g);N_GUARD::QAB1(H)
- Refutation
- P(b);P_SPINP(c),XR(C)
- Try
- R(D);P_PINP(c),XP(b)
- Threat
- R1(C)
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H),XS(g)
- S(g);N_GUARD::QAB1(H)
- Refutation
- P(e);N_SPINP(c),XR(D)
- Try
- R(D);XP(e)
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(c);OGATEB::QAR2(H),XP(b)
- S(a);N_GUARD::B(F)
- S(g);N_GUARD::QAB1(H)
- P(f);N_GUARD::S(G)
- Refutation
- P(b);
- Try
- Actual
- B(E);
- Vars
- S(a);CHECK,N_GUARD::QAB1(H),XS(a)
- P(f);N_GUARD,SBLOCK,XB(E)::S(G)
- P(f);SBLOCK::QAR1(H)
- S(a);N_GUARD::QAB1(H)
- S(g);N_GUARD::B(F),XS(g)
- S(g);N_GUARD::B(F)
- P(b);OGATE,P_SPINP(c)::R1(D),XP(c)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
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).