MESON Chess Problem Database
Problem Display
PID: 46097 (1b2r3/pKP2R2/PR1P2P1/p2Nk3/1p2p1nn/5PNB/r1pQ4/2B5 w - - 0 1)
Zappas, Byron
2nd Prize, Probleemblad, 1978
#2
13 + 11
| 3750 | FIDE Album (1977-1979) | 1984 |
| 102 | Probleemblad | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.f4#
- 1...Re7
- 2.Rxe7#
- 1...Rc8
- 2.Re7#
- 1...Rd8
- 2.Re7#
- 1...Rf8
- 2.Re7#
- 1...Rg8
- 2.Re7#
- 1...Rh8
- 2.Re7#
- 1...Sf2
- 2.f4#
- 1...Sh2
- 2.f4#
- 1...Se3
- 2.f4#
- 1...Sf6
- 2.f4#
- 1...Sh6
- 2.f4#
- 1...Re6
- Tries
- 1.Sc3?
- threat
- 2.Qd5#
- 1...Ke6
- 2.Qd5#
- 1...Se3
- 2.f4#
- 1...Sf6
- 2.f4#
- 1...bxc3!
- threat
- 1.Se3?
- threat
- 2.Qd5#
- 1...Ke6
- 2.Qd5#
- 1...Sxe3
- 2.f4#
- 1...Sf6
- 2.Sc4#
- 1...Sf5!
- threat
- 1.Sxb4?
- threat
- 2.Qd5#
- 1...Ke6
- 2.Qd5#
- 1...Se3
- 2.Sc6#
- 2.Qc3#
- 2.f4#
- 1...Sf6
- 2.Sc6#
- 2.Qc3#
- 2.f4#
- 1...axb4!
- threat
- 1.Sf6?
- threat
- 2.Qd5#
- 1...Ke6
- 2.Qd5#
- 1...Sxf6
- 2.f4#
- 1...Se3
- 2.Sd7#
- 1...e3!
- threat
- 1.Bb2+?
- 1...Ke6
- 2.Sf4#
- 1...Rxb2!
- 1...Ke6
- 1.Qd4+?
- 1...Ke6
- 2.Sf4#
- 2.Qxe4#
- 1...Kxd4!
- 1...Ke6
- 1.d7?
- threat
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxc7
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxf3
- 2.Rf5#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxg6
- 2.Rf5#
- 1...exf3
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ra1
- 2.Bb2#
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Rb2
- 2.Bxb2#
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ra3
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ra4
- 2.Bb2#
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Re6
- 2.f4#
- 1...Re7
- 2.Rxe7#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.Re7#
- 2.f4#
- 1...Rd8
- 2.Re7#
- 2.f4#
- 1...Rf8
- 2.Re7#
- 2.f4#
- 1...Rg8
- 2.Re7#
- 2.f4#
- 1...Rh8
- 2.Re7#
- 2.f4#
- 1...Sf2
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sh2
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Se3
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sf6
- 2.f4#
- 1...Sh6
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sg2
- 2.Rf5#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sf5
- 2.Rxf5#
- 2.f4#
- 1...b3
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...e3
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...a4
- 2.f4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...axb6!
- threat
- 1.c8Q?
- threat
- 2.Qxe8#
- 2.f4#
- 1...Re7+
- 2.Rxe7#
- 1...Rxc8
- 2.Re7#
- 1...Bxd6
- 2.f4#
- 1...Sxf3
- 2.Rf5#
- 2.Qf5#
- 2.Qxe8#
- 1...Sxg6
- 2.Rf5#
- 2.Qf5#
- 1...exf3
- 2.Qxe8#
- 1...Re6
- 2.f4#
- 1...Rd8
- 2.Re7#
- 2.f4#
- 1...Rf8
- 2.Re7#
- 2.f4#
- 1...Rg8
- 2.Re7#
- 2.f4#
- 1...Rh8
- 2.Re7#
- 2.f4#
- 1...Sf6
- 2.f4#
- 1...Sg2
- 2.Rf5#
- 2.Qf5#
- 2.Qxe8#
- 1...Sf5
- 2.Rxf5#
- 2.Qxf5#
- 2.f4#
- 1...axb6!
- threat
- 1.Sc3?
- Keys
- 1.Rb5!
- threat
- 2.Sf4#
- 1...Kxd6
- 2.Sf4#
- 1...Ke6
- 2.Sf4#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Sxf6#
- threat
- 1.Rb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(k);SBLOCK::P(C)
- R(k);N_GUARD,P_PINP(L)::R(M),XR(k)
- R(k);N_GUARD::R(M)
- S(e);::P(C)
- Tries
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::QAB1(B)
- S(e);::P(C)
- Refutation
- P(c);XS(F)
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::QAB1(B)
- S(e);XS(F)::P(C)
- S(e);::S(F)
- Refutation
- S(f);
- Try
- S(F);XP(c)
- Threat
- QAR1(B)
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::QAB1(B)
- Refutation
- P(g);XS(F)
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::QAB1(B)
- S(e);XS(F)::P(C)
- S(e);::S(F)
- Refutation
- P(d);
- Try
- B(A);CHECK
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::S(F)
- Refutation
- R(a);XB(A)
- Try
- Q(B);CHECK
- Refutation
- K(h);S_FLIGHT,XQ(B)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- S(f);N_GUARD,XP(J)::R1(M)
- P(d);XP(C)::PXR(k)=Q
- R(k);::P(C)
- S(e);::P(C)
- Refutation
- P(i);XR(H)
- Try
- P(L);
- Threat
- DUALS(2)
- Vars
- R(k);CHECK,N_GUARD::R(M),XR(k)
- R(k);N_GUARD,XQ(L)::R(M)
- B(j);XP(I)::P(C)
- P(d);XP(C)::QAR(L),XR(k)
- R(k);::P(C)
- S(e);::P(C)
- Refutation
- P(i);XR(H)
- Try
- Actual
- R(H);
- Threat
- R(H)+S(F)
- Vars
- K(h);S_FLIGHT,XP(I)::QAR(B)+S(F)
- K(h);P-FLIGHT,P_SPINS(e)::S(F)
- S(e);::R(H)+S(F),XS(e)
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).