MESON Chess Problem Database
Problem Display
PID: 64569 (2b5/Kp6/2pN4/p1k1P3/2PR4/P2QP1p1/1r3Pqn/2N5 w - - 0 1)
Petkov, Petko Andonov
2/3 Prize, Due Alfieri, 1980-1981
#2
10 + 9
| 3752 | FIDE Album (1980-1982) | 1988 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Se4#
- 1...Qh3
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Qg1
- 2.Se4#
- 1...Qxf2
- 2.Se4#
- 1...Ra2
- 2.Sb3#
- 1...Rc2
- 2.Sb3#
- 1...Rd2
- 2.Sb3#
- 1...Re2
- 2.Sb3#
- 1...Rxf2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Sf3
- 2.Se4#
- 1...Qf1
- Tries
- 1.Re4?
- threat
- 2.Qd4#
- 1...Qxe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Sf3!
- threat
- 1.Rf4?
- threat
- 2.Qd4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Sf3
- 2.Se4#
- 1...Qd5!
- threat
- 1.Rg4?
- threat
- 2.Qd4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Sf3
- 2.Se4#
- 1...Qd5!
- threat
- 1.Rh4?
- threat
- 2.Qd4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Sf3
- 2.Se4#
- 1...Qd5!
- threat
- 1.Qb1?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 2.Qb6#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qf1?
- threat
- 2.Sd3#
- 1...Qxf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qc2?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qe2?
- threat
- 2.Sd3#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qe4?
- threat
- 2.Sd3#
- 1...Qxe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Qf1!
- threat
- 1.Qf5?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 2.e6#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bxf5!
- threat
- 1.Qg6?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qh7?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qd1?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qd2?
- threat
- 2.Sd3#
- 1...Rxd2
- 2.Sb3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rb3
- 2.Sxb3#
- 1...Bf5!
- threat
- 1.Qc3?
- threat
- 2.Sd3#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Sb3#
- 1...Bf5!
- threat
- 1.Re4?
- Keys
- 1.Qb3!
- threat
- 2.Sd3#
- 1...Rxb3
- 2.Sxb3#
- 1...Bf5
- 2.Sxb7#
- 1...Qf1
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Rd2
- 2.Qb6#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- Q(b);N_GUARD,XP(B)::S(I)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD,XP(B)::S(A)
- R(a);N_GUARD::S(A),XR(a)
- S(c);S_CUTQ(b)::S(I)
- Tries
- Try
- R(G);
- Threat
- QAB1(D)
- Vars
- Q(b);XR(G)::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- Refutation
- S(c);
- Try
- R(G);
- Threat
- QAB1(D)
- Vars
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- S(c);S_CUTQ(b)::S(I)
- Refutation
- Q(b);
- Try
- R(G);
- Threat
- QAB1(D)
- Vars
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- S(c);S_CUTQ(b)::S(I)
- Refutation
- Q(b);
- Try
- R(G);
- Threat
- QAB1(D)
- Vars
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- S(c);S_CUTQ(b)::S(I)
- Refutation
- Q(b);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD,XQ(D)::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);XQ(D)::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- Q(b);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);XQ(D)
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- R(a);N_GUARD,XQ(D)::S(A)
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A),XR(a)
- Refutation
- B(i);
- Try
- Q(D);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- Actual
- Q(D);
- Threat
- S(A)
- Vars
- R(a);XQ(D)::S(A),XR(a)
- B(i);N_GUARD::S(I),XP(h)
- Q(b);N_GUARD::S(I)
- Q(b);N_GUARD::S(I),XQ(b)
- R(a);N_GUARD::QAB1(D)
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).