MESON Chess Problem Database
Problem Display
PID: 107643 (1BQ2nr1/1p6/7N/1R4q1/1NpkpP2/2p1p1b1/K7/8 w - - 0 1)
Bakcsi, Gyorgy
Northwest Chess, 1978
#2
7 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Rd5#
- 2.Qc5#
- 1...Qh4
- 2.Sf5#
- 2.Be5#
- 2.Rd5#
- 2.Qc5#
- 1...Qf6
- 2.Rd5#
- 2.Qc5#
- 1...Qxh6
- 2.Be5#
- 2.Rd5#
- 2.Qc5#
- 1...Qe7
- 2.Sf5#
- 2.Rd5#
- 1...Qd8
- 2.Sf5#
- 2.Be5#
- 2.Qc5#
- 1...Qg4
- 2.Be5#
- 2.Rd5#
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Rxd5#
- 1...Qe5
- 2.Bxe5#
- 1...Qf5
- 2.Sxf5#
- 1...Qg6
- 2.Be5#
- 2.Rd5#
- 2.Qc5#
- 1...Qg7
- 2.Sf5#
- 2.Rd5#
- 2.Qc5#
- 1...Qxf4
- Tries
- 1.Ba7+?
- 1...Qc5
- 2.Sf5#
- 2.Bxc5#
- 2.Qxc5#
- 1...b6!
- 1...Qc5
- 1.Rxg5?
- threat
- 2.Sf5#
- 2.Be5#
- 2.Rd5#
- 2.Qc5#
- 1...Bxf4
- 2.Sf5#
- 2.Rd5#
- 2.Qc5#
- 1...c2
- 2.Be5#
- 1...e2
- 2.Sf5#
- 2.Qc5#
- 1...b6
- 2.Sf5#
- 2.Be5#
- 2.Rd5#
- 1...Se6
- 2.Sf5#
- 2.Be5#
- 2.Rd5#
- 2.Qd7#
- 1...Sg6
- 2.Sf5#
- 2.Rd5#
- 2.Qd7#
- 2.Qc5#
- 1...Sd7
- 2.Sf5#
- 2.Rd5#
- 2.Qxd7#
- 1...Rxg5!
- threat
- 1.Qf5?
- threat
- 2.Be5#
- 2.Rd5#
- 1...Qxf4
- 2.Rd5#
- 2.Qc5#
- 2.Qd5#
- 1...Qxf5
- 2.Sxf5#
- 1...Bxf4
- 2.Rd5#
- 1...c2
- 2.Be5#
- 1...Qf6
- 2.Rd5#
- 2.Qc5#
- 2.Qd5#
- 2.Qxf6#
- 1...Qe7
- 2.Rd5#
- 2.Qd5#
- 1...Qd8
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 1...Qg7
- 2.Rd5#
- 2.Qc5#
- 2.Qd5#
- 1...Sg6
- 2.Rd5#
- 1...Sd7
- 2.Rd5#
- 1...e2!
- threat
- 1.Qd7+?
- 1...Qd5
- 2.Sf5#
- 2.Be5#
- 2.Rxd5#
- 2.Qxd5#
- 1...Sxd7!
- 1...Qd5
- 1.Qd8+?
- 1...Qxd8
- 2.Sf5#
- 2.Be5#
- 1...Qd5
- 2.Sf5#
- 2.Be5#
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd7!
- 1...Qxd8
- 1.f5?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Qxf5
- 2.Sxf5#
- 1...e2
- 2.Qc5#
- 1...b6
- 2.Rd5#
- 1...Qe7
- 2.Rd5#
- 1...Qd8
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Bc7
- 2.Rd5#
- 1...Se6
- 2.Rd5#
- 1...Sd7
- 2.Rd5#
- 1...c2!
- threat
- 1.Ba7+?
- Keys
- 1.Rf5!
- threat
- 2.Be5#
- 2.Qc5#
- 1...Qxf4
- 2.Rd5#
- 2.Qc5#
- 1...Qxf5
- 2.Sxf5#
- 1...Bxf4
- 2.Qc5#
- 1...c2
- 2.Be5#
- 1...e2
- 2.Qc5#
- 1...b6
- 2.Be5#
- 1...Qf6
- 2.Rd5#
- 2.Qc5#
- 1...Qe7
- 2.Rd5#
- 1...Qg7
- 2.Rd5#
- 2.Qc5#
- 1...Se6
- 2.Be5#
- 2.Qd7#
- 1...Sg6
- 2.Qd7#
- 2.Qc5#
- 1...Sd7
- 2.Qxd7#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(g);N_GUARD::QAB1(G),XQ(g)
- Q(g);N_GUARD::R1(D),XQ(g)
- Q(g);N_GUARD::B(F),XQ(g)
- Q(g);N_GUARD::S(E),XQ(g)
- Tries
- Try
- B(F);CHECK
- Refutation
- P(h);P_SPINP(h)
- Try
- R(D);XQ(g)
- Threat
- DUALS(4)
- Vars
- P(a);::B(F)
- Refutation
- R(j);XR(D)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(g);XQ(G)::S(E),XQ(g)
- B(c);XP(C)::R1(D)
- P(a);::B(F)
- S(i);::R1(D)
- Refutation
- P(b);
- Try
- Q(G);CHECK
- Refutation
- S(i);XQ(G)
- Try
- Q(G);CHECK
- Refutation
- S(i);P_SPINS(i)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(g);XP(C)::S(E),XQ(g)
- P(b);::QAB1(G)
- P(h);::R1(D)
- Q(g);::R1(D)
- Q(g);::QAB1(G)
- B(c);::R1(D)
- S(i);::R1(D)
- Refutation
- P(a);
- Try
- Actual
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(D)::S(E),XQ(g)
- B(c);XP(C)::QAB1(G)
- P(a);::B(F)
- P(b);::QAB1(G)
- P(h);::B(F)
- Q(g);N_GUARD::R1(D)
- S(i);N_GUARD::QAR(G),XS(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).