MESON Chess Problem Database
Problem Display
PID: 38170 (4N3/4Pp1p/R3Bp1K/p3kpn1/R3Pp1Q/8/2N5/8 w - - 0 1)
Zappas, Byron
4th Place, Match: Greece - Netherlands, 1974
#2
9 + 8
| 102 | Probleemblad | 1976 |
| 3771 | FIDE Album (1974-1976) | 1980 |
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Qxf6#
- 1...Sh3
- 2.Qxf6#
- 1...Sxe6
- 2.Qxf6#
- 1...f3
- 2.R4xa5#
- 1...fxe4
- 2.R4xa5#
- 1...fxe6
- 2.R6xa5#
- 1...Sf3
- Tries
- 1.Sd4?
- 1...Sxe4
- 2.Sf3#
- 1...Sxe6
- 2.Sf3#
- 2.Sc6#
- 1...fxe4
- 2.R6xa5#
- 1...fxe6
- 2.Sc6#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...f3
- 2.R6xa5#
- 1...Kxe4!
- 1...Sxe4
- 1.Ba2?
- threat
- 2.R6xa5#
- 1...Se6
- 2.Qxf6#
- 1...Sxe4!
- threat
- 1.Bb3?
- threat
- 2.R6xa5#
- 1...Se6
- 2.Qxf6#
- 1...Sxe4!
- threat
- 1.Bxf5?
- threat
- 2.R4xa5#
- 2.R6xa5#
- 1...Se6
- 2.Qxf6#
- 1...Sxe4!
- threat
- 1.Bd7?
- threat
- 2.R6xa5#
- 1...Se6
- 2.Qxf6#
- 1...Sxe4!
- threat
- 1.Bc8?
- threat
- 2.R6xa5#
- 1...Se6
- 2.Qxf6#
- 1...Sxe4!
- threat
- 1.Rd4?
- 1...Sxe4
- 2.Rd5#
- 1...Sxe6
- 2.Qxf6#
- 1...fxe4
- 2.Rd5#
- 1...fxe6
- 2.Rxa5#
- 1...Sf3
- 2.Qxf6#
- 1...Sh3
- 2.Qxf6#
- 1...f3
- 2.Rd5#
- 1...a4!
- 1...Sxe4
- 1.Rb6?
- 1...Sxe6
- 2.Qxf6#
- 1...fxe4
- 2.Rxa5#
- 1...fxe6
- 2.Rb5#
- 1...Sf3
- 2.Qxf6#
- 1...Sh3
- 2.Qxf6#
- 1...f3
- 2.Rxa5#
- 1...Sxe4!
- 1...Sxe6
- 1.Rc6?
- 1...Sxe6
- 2.Qxf6#
- 1...fxe4
- 2.Rxa5#
- 1...fxe6
- 2.Rc5#
- 1...Sf3
- 2.Qxf6#
- 1...Sh3
- 2.Qxf6#
- 1...f3
- 2.Rxa5#
- 1...Sxe4!
- 1...Sxe6
- 1.Qxg5?
- threat
- 2.Qxf6#
- 2.Qxf5#
- 1...fxe6
- 2.R6xa5#
- 2.Qxf6#
- 1...f3
- 2.Qxf5#
- 1...fxg5!
- threat
- 1.Qh3?
- threat
- 2.Qxf5#
- 2.Qc3#
- 1...Sxe4
- 2.Qxf5#
- 1...Sxe6
- 2.Qxf5#
- 1...fxe4
- 2.R4xa5#
- 2.R6xa5#
- 2.Qf5#
- 2.Qc3#
- 1...fxe6
- 2.R6xa5#
- 2.Qc3#
- 1...f3
- 2.Qxf5#
- 1...Sf3
- 2.Qxf5#
- 1...Sxh3!
- threat
- 1.Qg4?
- threat
- 2.Qxf5#
- 1...fxe4
- 2.R4xa5#
- 2.R6xa5#
- 2.Qf5#
- 1...fxe6
- 2.R6xa5#
- 1...fxg4!
- threat
- 1.Qh5?
- 1...Sxe4
- 2.Qxf5#
- 1...Sxe6
- 2.Qxf5#
- 1...fxe4
- 2.R4xa5#
- 1...fxe6
- 2.R6xa5#
- 1...Sf3
- 2.Qxf5#
- 1...Sh3
- 2.Qxf5#
- 1...f3!
- 1...Sxe4
- 1.Sd4?
- Keys
- 1.Sd6!
- 1...Kxe6
- 2.e8Q#
- 1...Sxe4
- 2.Sc4#
- 2.Sxf7#
- 1...Sxe6
- 2.Sxf7#
- 1...fxe4
- 2.Sc4#
- 1...fxe6
- 2.R4xa5#
- 1...Sf3
- 2.Sxf7#
- 1...Sh3
- 2.Sxf7#
- 1...f3
- 2.Sc4#
- 1...Kxe6
- 1.Sd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(e);OGATE::QAB1(D),XP(f)
- S(e);OGATE,XB(F)::QAB1(D),XP(f)
- P(a);::R(B),XP(b)
- P(d);SBLOCK,XP(C)::R(B),XP(b)
- P(g);SBLOCK,XB(F)::R(E),XP(b)
- Tries
- Try
- S(A);
- Vars
- S(e);N_GUARD,XP(C)::S(A)
- P(d);SBLOCK,XP(C)::R(E),XP(b)
- P(g);SBLOCK,XB(F)::S(A)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- P(a);::R(E),XP(b)
- Refutation
- K(c);P-FLIGHT,P_SPINP(a),XP(C)
- Try
- B(F);
- Threat
- R(E),XP(b)
- Vars
- S(e);OGATE::QAB1(D),XP(f)
- Refutation
- S(e);XP(C)
- Try
- B(F);
- Threat
- R(E),XP(b)
- Vars
- S(e);OGATE::QAB1(D),XP(f)
- Refutation
- S(e);XP(C)
- Try
- B(F);XP(d)
- Threat
- DUALS(2)
- Vars
- S(e);OGATE::QAB1(D),XP(f)
- Refutation
- S(e);XP(C)
- Try
- B(F);
- Threat
- R(E),XP(b)
- Vars
- S(e);OGATE::QAB1(D),XP(f)
- Refutation
- S(e);XP(C)
- Try
- B(F);
- Threat
- R(E),XP(b)
- Vars
- S(e);OGATE::QAB1(D),XP(f)
- Refutation
- S(e);XP(C)
- Try
- R(B);
- Vars
- S(e);SBLOCK,XP(C)::R1(B)
- S(e);OGATE,XB(F)::QAB1(D),XP(f)
- P(d);SBLOCK,XP(C)::R1(B)
- P(g);SBLOCK,XB(F)::R(E),XP(b)
- S(e);OGATE::QAB1(D),XP(f)
- P(a);::R1(B)
- Refutation
- P(b);
- Try
- R(E);
- Vars
- S(e);OGATE,XB(F)::QAB1(D),XP(f)
- P(d);SBLOCK,XP(C)::R(B),XP(b)
- P(g);SBLOCK,XB(F)::R(E)
- S(e);OGATE::QAB1(D),XP(f)
- P(a);::R(B),XP(b)
- Refutation
- S(e);XP(C)
- Try
- R(E);
- Vars
- S(e);OGATE,XB(F)::QAB1(D),XP(f)
- P(d);SBLOCK,XP(C)::R(B),XP(b)
- P(g);SBLOCK,XB(F)::R(E)
- S(e);OGATE::QAB1(D),XP(f)
- P(a);::R(B),XP(b)
- Refutation
- S(e);XP(C)
- Try
- Q(D);P_PINP(d),XS(e)
- Threat
- DUALS(2)
- Vars
- P(a);::QAR1(D),XP(d)
- Refutation
- P(f);N_SPINP(d),XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(e);XP(C)::QAR1(D),XP(d)
- S(e);XB(F)::QAR1(D),XP(d)
- P(a);::QAR1(D),XP(d)
- S(e);::QAR1(D),XP(d)
- Refutation
- S(e);XQ(D)
- Try
- Q(D);
- Threat
- QAR1(D),XP(d)
- Vars
- P(g);SBLOCK,XB(F)::R(E),XP(b)
- Refutation
- P(d);XQ(D)
- Try
- Q(D);
- Vars
- S(e);OGATE,P_SPINP(d),XP(C)::QAR1(D),XP(d)
- S(e);OGATE,P_SPINP(d),XB(F)::QAR1(D),XP(d)
- P(d);P_SPINS(e),SBLOCK,XP(C)::R(B),XP(b)
- P(g);SBLOCK,XB(F)::R(E),XP(b)
- S(e);OGATE,P_SPINP(d)::QAR1(D),XP(d)
- Refutation
- P(a);
- Try
- Actual
- S(I);
- Vars
- K(c);P-FLIGHT,XB(F)::P=Q
- S(e);N_GUARD,XB(F)::S(I),XP(g)
- P(d);SBLOCK,XP(C)::S(I)
- P(g);SBLOCK,XB(F)::R(B),XP(b)
- S(e);N_GUARD::S(I),XP(g)
- P(a);::S(I)
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).