MESON Chess Problem Database
Problem Display
PID: 63744 (4R3/3n3p/pB4pK/pp1B1pQN/N7/1P1kPP2/1Pppn3/2bb4 w - - 0 1)
Zappas, Byron
O Pyrgos, 1976
#2
11 + 13
| 3771 | FIDE Album (1974-1976) | 1980 |
| 56 | The Problemist | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sxb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...b4
- 2.Bc4#
- 1...f4
- 2.Be4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- Tries
- 1.Bb7?
- 1...Sxb6
- 2.Sc5#
- 1...bxa4
- 2.Bxa6#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bxa6#
- 1...f4
- 2.Be4#
- 1...Bxb2!
- 1...Sxb6
- 1.Bxa5?
- 1...Bxb2
- 2.Sxb2#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...f4!
- 1...Bxb2
- 1.Ba7?
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Bxb2!
- 1...bxa4
- 1.Re5?
- 1...Sxe5
- 2.Sc5#
- 1...Sxb6
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Bxb2!
- 1...Sxe5
- 1.Re6?
- 1...Sxb6
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Bxb2!
- 1...Sxb6
- 1.Re7?
- 1...Sxb6
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Bxb2!
- 1...Sxb6
- 1.Rc8?
- 1...Bxb2
- 2.Sxb2#
- 1...Sxb6
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Sd4!
- 1...Bxb2
- 1.Qf6?
- 1...Bxb2
- 2.Sxb2#
- 1...Sxb6
- 2.Sc5#
- 1...Sxf6
- 2.Sc5#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...g5
- 2.Qxf5#
- 1...Se5!
- 1...Bxb2
- 1.Qxg6?
- threat
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sxc5#
- 1...Sf6
- 2.Sc5#
- 1...hxg6!
- threat
- 1.Bb7?
- Keys
- 1.Bd4!
- 1...Bxb2
- 2.Sxb2#
- 1...Sxd4
- 2.Sf4#
- 1...bxa4
- 2.Bc4#
- 1...gxh5
- 2.Qxf5#
- 1...Sg1
- 2.Sf4#
- 1...Sc3
- 2.Sf4#
- 1...Sg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...f4
- 2.Be4#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...b4
- 2.Bc4#
- 1...Bxb2
- 1.Bd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- S(l);N_GUARD,XB(I)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(h);N_GUARD::B(F)
- P(i);N_GUARD::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- Tries
- Try
- B(F);
- Vars
- S(l);N_GUARD,XB(I)::S(E)
- P(h);OGATEB,XS(E)::B(F),XP(j)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);OGATEB::B(F),XP(j)
- P(i);N_GUARD::B(F)
- Refutation
- B(a);XP(A)
- Try
- B(I);XP(g)
- Vars
- B(a);XP(A)::S(E),XB(a)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- P(i);
- Try
- B(I);
- Vars
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- B(a);XP(A)
- Try
- R(K);
- Vars
- S(l);N_GUARD,XR(K)::S(E)
- S(l);N_GUARD,XB(I)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- B(a);XP(A)
- Try
- R(K);
- Vars
- S(l);N_GUARD,XB(I)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- B(a);XP(A)
- Try
- R(K);
- Vars
- S(l);N_GUARD,XB(I)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- B(a);XP(A)
- Try
- R(K);
- Vars
- B(a);XP(A)::S(E),XB(a)
- S(l);N_GUARD,XB(I)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- Refutation
- S(e);
- Try
- Q(G);
- Vars
- B(a);XP(A)::S(E),XB(a)
- S(l);N_GUARD,XB(I)::S(E)
- S(l);N_GUARD,XQ(G)::S(E)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(F)
- P(k);N_GUARD::QAB(G),XP(i)
- Refutation
- S(l);
- Try
- Q(G);P_PINP(i),XP(k)
- Threat
- QAB(G),XP(i)
- Vars
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- Refutation
- P(m);N_SPINP(i),XQ(G)
- Try
- Actual
- B(I);
- Vars
- B(a);XP(A)::S(E),XB(a)
- S(e);N_GUARD,XB(I)::S(H)
- P(h);N_GUARD,XS(E)::B(F)
- P(k);N_GUARD,XS(H)::QAB(G),XP(i)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(i);N_GUARD::B(F)
- S(l);N_GUARD::S(E),XS(l)
- S(l);N_GUARD::S(E)
- P(h);N_GUARD::B(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).