MESON Chess Problem Database
Problem Display
PID: 42583 (2n4b/2B4q/1p2R3/1Q4rn/2P1pN2/2p1k3/4N1P1/1BR1K3 w - - 0 1)
Zappas, Byron
1st Prize, Piatesi JT, 1984
#2
10 + 9
| 3748 | FIDE Album (1983-1985) | 1992 |
| 5406 | Selected Chess Compositions by Greek Composers | 2004 |
| 4901 | Best Problems | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Rxe4#
- 1...Qh6
- 2.Rxe4#
- 1...Qxc7
- 2.Rxe4#
- 1...Qd7
- 2.Rxe4#
- 1...Qf7
- 2.Rxe4#
- 1...Qg7
- 2.Rxe4#
- 1...Rg3
- 2.Sd5#
- 1...Rg4
- 2.Sd5#
- 1...Rd5
- 2.Sxd5#
- 1...Re5
- 2.Rxc3#
- 1...Rf5
- 2.Rxe4#
- 1...Rg6
- 2.Sd5#
- 2.Rxe4#
- 1...Rg7
- 2.Sd5#
- 2.Rxc3#
- 1...Rg8
- 2.Sd5#
- 1...Be5
- 2.Sd5#
- 1...Sxf4
- 2.Bxf4#
- 1...Sf6
- 2.Rxc3#
- 1...Sg7
- 2.Rxc3#
- 1...Qg8
- Tries
- 1.Be5?
- threat
- 2.Sd5#
- 2.Rxc3#
- 1...Rxg2
- 2.Rxc3#
- 1...Rxe5
- 2.Rxc3#
- 1...Bxe5
- 2.Sd5#
- 1...Sxf4
- 2.Bxf4#
- 1...Qb7
- 2.Rxc3#
- 1...Sf6
- 2.Bd4#
- 2.Rxc3#
- 1...Se7
- 2.Rxc3#
- 2.Qxb6#
- 1...c2
- 2.Qb3#
- 1...Qd7!
- threat
- 1.Bxb6+?
- 1...Rc5
- 2.Sd5#
- 1...Bd4
- 2.Bxd4#
- 2.Rxc3#
- 1...Sxb6!
- 1...Rc5
- 1.Rd1?
- threat
- 2.Rd3#
- 1...Sxf4
- 2.Bxf4#
- 1...Qd7
- 2.Rxe4#
- 1...Rd5
- 2.Sxd5#
- 1...Be5
- 2.Sd5#
- 1...Re5!
- threat
- 1.Re5?
- threat
- 2.Sd5#
- 2.Rxc3#
- 1...Rxg2
- 2.Rxc3#
- 1...Rxe5
- 2.Rxc3#
- 1...Bxe5
- 2.Sd5#
- 1...Qg8
- 2.Rxc3#
- 2.Rxe4#
- 1...Qd7
- 2.Rxe4#
- 1...Qf7
- 2.Rxc3#
- 2.Rxe4#
- 1...Sf6
- 2.Rxc3#
- 1...Se7
- 2.Bxb6#
- 2.Rxc3#
- 2.Qxb6#
- 1...c2
- 2.Qb3#
- 1...Sxf4!
- threat
- 1.Qd7?
- threat
- 2.Qd3#
- 1...Qxd7
- 2.Rxe4#
- 1...Sxf4
- 2.Bxf4#
- 1...Rd5
- 2.Sxd5#
- 1...Re5
- 2.Rxc3#
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Sd5#
- 1...Sd6!
- threat
- 1.Qd5?
- threat
- 2.Qd3#
- 1...Rxd5
- 2.Sxd5#
- 1...Sxf4
- 2.Bxf4#
- 1...Qd7
- 2.Rxe4#
- 2.Qxe4#
- 1...Re5
- 2.Rxc3#
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Be5!
- threat
- 1.Qe5?
- threat
- 2.Sd5#
- 2.Rxc3#
- 1...Rxg2
- 2.Rxc3#
- 1...Rxe5
- 2.Rxc3#
- 1...Bxe5
- 2.Sd5#
- 1...Sxf4
- 2.Qxf4#
- 1...Qd7
- 2.Qxe4#
- 1...Sf6
- 2.Rxc3#
- 2.Qxc3#
- 2.Qd4#
- 1...Se7
- 2.Bxb6#
- 2.Rxc3#
- 1...c2!
- threat
- 1.Qf5?
- threat
- 2.Sd5#
- 2.Rxe4#
- 1...Rxg2
- 2.Sxg2#
- 2.Sd5#
- 1...Rxf5
- 2.Rxe4#
- 1...Sxf4
- 2.Bxf4#
- 2.Rxe4#
- 2.Qxf4#
- 1...Qd7
- 2.Rxe4#
- 2.Qxe4#
- 1...Qe7
- 2.Sd5#
- 2.Qxe4#
- 1...Be5
- 2.Sd5#
- 1...Sg3
- 2.Sd5#
- 1...Sf6
- 2.Rxc3#
- 1...Sd6
- 2.Sd5#
- 1...Se7
- 2.Rxe4#
- 1...c2
- 2.Rxe4#
- 1...Qxf5!
- threat
- 1.Qxg5?
- threat
- 2.Sd5#
- 2.Sxh5#
- 1...Qxc7
- 2.Sd5#
- 2.Rxe4#
- 1...Sxf4
- 2.Bxf4#
- 2.Qxf4#
- 2.Qg3#
- 1...Qf5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg8
- 2.Sd5#
- 2.Rxe4#
- 1...Qh6
- 2.Sd5#
- 2.Rxe4#
- 1...Qe7
- 2.Sd5#
- 1...Qf7
- 2.Sd5#
- 2.Rxe4#
- 1...Qg7
- 2.Sd5#
- 2.Rxe4#
- 1...Be5
- 2.Sd5#
- 1...Bf6
- 2.Sd5#
- 1...Sg3
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sg6#
- 2.Qxg3#
- 1...Sf6
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sg6#
- 2.Rxc3#
- 2.Qg3#
- 1...Sg7
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sg6#
- 2.Rxc3#
- 2.Qg3#
- 1...c2!
- threat
- 1.Qxb6+?
- 1...Rc5
- 2.Sd5#
- 1...Bd4
- 2.Rxc3#
- 2.Qxd4#
- 1...Sxb6!
- 1...Rc5
- 1.Be5?
- Keys
- 1.c5!
- threat
- 2.Qd3#
- 1...Sxf4
- 2.Bxf4#
- 1...Qd7
- 2.Rxe4#
- 1...Rd5
- 2.Sxd5#
- 1...Re5
- 2.Rxc3#
- 1...Be5
- 2.Sd5#
- threat
- 1.c5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 11
- Sets
- Q(g);N_GUARD::R1(I),XP(c)
- Q(g);N_GUARD,XB(J)::R1(I),XP(c)
- R(d);N_GUARD::S(G)
- R(d);N_GUARD::S(G),XR(d)
- R(d);N_SPINP(c),S_CUTB(i)::R(B),XP(a)
- R(d);S_CUTQ(g)::R1(I),XP(c)
- B(i);N_SPINP(c),S_CUTR(d)::S(G)
- S(e);OGATE,XS(G)::B(J),XS(e)
- S(e);S_CUTB(i)::R(B),XP(a)
- Tries
- Try
- B(J);N_PINP(c)
- Threat
- DUALS(2)
- Vars
- R(d);XP(E)::R(B),XP(a)
- R(d);XB(J)::R(B),XP(a)
- B(i);XB(J)::S(G)
- S(e);OGATE,XS(G)::B(J),XS(e)
- Q(g);::R(B),XP(a)
- P(a);OGATEB::QAR(H)
- Refutation
- Q(g);
- Try
- B(J);CHECK,XP(f)
- Vars
- R(d);P_SPINR(d)::S(G)
- Refutation
- S(h);XB(J)
- Try
- R(B);
- Threat
- R1(B)
- Vars
- S(e);OGATE,XS(G)::B(J),XS(e)
- Q(g);N_GUARD::R1(I),XP(c)
- R(d);N_GUARD::S(G),XR(d)
- B(i);N_SPINP(c),S_CUTR(d)::S(G)
- Refutation
- R(d);N_SPINP(c)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(d);XP(E)::R(B),XP(a)
- R(d);N_SPINP(c),XR(I)::R(B),XP(a)
- B(i);N_SPINP(c),XR(I)::S(G)
- Q(g);N_GUARD::R1(I),XP(c)
- S(e);::R(B),XP(a)
- P(a);OGATEB::QAR(H)
- Refutation
- S(e);XS(G)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- Q(g);N_GUARD,XQ(H)::R1(I),XP(c)
- S(e);OGATE,XS(G)::B(J),XS(e)
- R(d);N_GUARD::S(G),XR(d)
- B(i);N_GUARD::QAB1(H),XB(i)
- B(i);N_SPINP(c),S_CUTR(d)::S(G)
- Refutation
- S(h);
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- R(d);XQ(H)::S(G),XR(d)
- S(e);OGATE,XS(G)::B(J),XS(e)
- B(i);N_GUARD::QAB1(H),XB(i)
- Refutation
- B(i);N_SPINP(c)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(d);XP(E)::R(B),XP(a)
- R(d);N_SPINP(c),XQ(H)::R(B),XP(a)
- B(i);N_SPINP(c),XQ(H)::S(G)
- S(e);OGATE,XS(G)::QAB1(H),XS(e)
- Q(g);N_GUARD::QAR1(H),XP(c)
- Refutation
- P(a);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(d);XQ(H)::R1(I),XP(c)
- B(i);N_SPINP(c)::S(G)
- S(e);::S(G)
- S(e);S_CUTB(i)::R(B),XP(a)
- S(h);::S(G)
- S(h);::R1(I),XP(c)
- P(a);::R1(I),XP(c)
- Refutation
- Q(g);XQ(H)
- Try
- Q(H);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(g);::QAB(H)+S(G),DCHECK
- B(i);N_SPINP(c)::QAB(H)+S(G),DCHECK
- B(i);::QAB(H)+S(G),DCHECK
- Refutation
- P(a);
- Try
- Q(H);CHECK,XP(f)
- Vars
- R(d);P_SPINR(d)::S(G)
- Refutation
- S(h);XQ(H)
- Try
- Actual
- P(F);
- Threat
- QAR1(H)
- Vars
- S(e);OGATE,XS(G)::B(J),XS(e)
- Q(g);N_GUARD::R1(I),XP(c)
- R(d);N_GUARD::S(G),XR(d)
- R(d);N_SPINP(c),S_CUTB(i)::R(B),XP(a)
- B(i);N_SPINP(c),S_CUTR(d)::S(G)
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).