MESON Chess Problem Database
Problem Display
PID: 225817 (1K6/2Q1b3/2N5/8/P1k1P3/B6R/8/8 w - - 0 1)
Ulanov, Lev
Praca, 1999
#2
7 + 2
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bh4
- 2.Qf7#
- 1...Bc5
- 2.Qf7#
- 1...Bg5
- 2.Qf7#
- 1...Bf6
- 2.Qf7#
- 1...Bd8
- 2.Qf7#
- 1...Bf8
- 2.Qf7#
- 1...Bh4
- Tries
- 1.Sd4+?
- 1...Bc5
- 2.Qxc5#
- 1...Kxd4!
- 1...Bc5
- 1.Sa7+?
- 1...Bc5
- 2.Qxc5#
- 1...Kd4!
- 1...Bc5
- 1.Sd8+?
- 1...Bc5
- 2.Qxc5#
- 1...Kd4!
- 1...Bc5
- 1.Bb2?
- threat
- 2.Rc3#
- 1...Kc5
- 2.Rc3#
- 1...Bb4
- 2.Sa5#
- 2.Se5#
- 1...Bf6!
- threat
- 1.Bb4?
- threat
- 2.Rc3#
- 1...Bf6
- 2.Qf7#
- 1...Bxb4!
- threat
- 1.Bd6?
- 1...Bh4
- 2.Qf7#
- 1...Bg5
- 2.Qf7#
- 1...Bf6
- 2.Qf7#
- 1...Bd8
- 2.Qf7#
- 1...Bf8
- 2.Qf7#
- 1...Bxd6!
- 1...Bh4
- 1.Qa5?
- threat
- 2.Rc3#
- 2.Qc3#
- 2.Qb5#
- 2.Qd5#
- 2.Qa6#
- 1...Bxa3
- 2.Rc3#
- 2.Qc3#
- 2.Qb5#
- 2.Qd5#
- 1...Bb4
- 2.Qxb4#
- 2.Qb5#
- 2.Qd5#
- 1...Bc5
- 2.Rc3#
- 2.Qc3#
- 2.Qb5#
- 2.Qxc5#
- 2.Qa6#
- 1...Bf6
- 2.Qb4#
- 2.Qb5#
- 2.Qc5#
- 2.Qd5#
- 2.Qa6#
- 1...Bd6+!
- threat
- 1.Qe5?
- threat
- 2.Sa5#
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Bxa3
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qd5#
- 1...Bb4
- 2.Qd4#
- 2.Qb5#
- 2.Qd5#
- 1...Bc5
- 2.Sa5#
- 2.Rc3#
- 2.Qc3#
- 2.Qxc5#
- 2.Qd5#
- 2.Qe6#
- 1...Bf6
- 2.Sa5#
- 2.Rc3#
- 2.Qb5#
- 2.Qc5#
- 2.Qd5#
- 2.Qe6#
- 1...Bd8
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 2.Qd5#
- 2.Qe6#
- 1...Bd6+!
- threat
- 1.Qb6?
- threat
- 2.Sa5#
- 2.Se5#
- 2.Qd4#
- 2.Qb3#
- 2.Qb5#
- 2.Qa6#
- 1...Bxa3
- 2.Sa5#
- 2.Se5#
- 2.Qd4#
- 2.Qb5#
- 1...Bb4
- 2.Se5#
- 2.Qd4#
- 2.Qxb4#
- 2.Qb5#
- 1...Bc5
- 2.Qxc5#
- 2.Qb3#
- 2.Qb5#
- 2.Qa6#
- 1...Bf6
- 2.Sa5#
- 2.Qc5#
- 2.Qb3#
- 2.Qb4#
- 2.Qb5#
- 2.Qa6#
- 1...Bd6+!
- threat
- 1.Qd6?
- threat
- 2.Sa5#
- 2.Se5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 2.Qe6#
- 1...Bf6
- 2.Sa5#
- 2.Qb4#
- 2.Qc5#
- 2.Qd3#
- 2.Qd5#
- 2.Qe6#
- 1...Bd8
- 2.Se5#
- 2.Qb4#
- 2.Qc5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 2.Qe6#
- 1...Bxd6+!
- threat
- 1.Qa7?
- threat
- 2.Sa5#
- 2.Se5#
- 2.Qd4#
- 2.Qa6#
- 1...Bxa3
- 2.Qd4#
- 1...Bb4
- 2.Se5#
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 2.Qa6#
- 2.Qf7#
- 1...Bf6
- 2.Sa5#
- 2.Qc5#
- 2.Qa6#
- 2.Qf7#
- 1...Bd8
- 2.Se5#
- 2.Qd4#
- 2.Qc5#
- 2.Qa6#
- 2.Qf7#
- 1...Bd6+!
- threat
- 1.Qb7?
- threat
- 2.Qa6#
- 2.Qb3#
- 2.Qb5#
- 1...Bxa3
- 2.Qb5#
- 1...Bb4
- 2.Qxb4#
- 2.Qb5#
- 1...Bd6+!
- threat
- 1.Qd7?
- threat
- 2.Sa5#
- 2.Se5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bxa3
- 2.Qd4#
- 2.Qd5#
- 1...Bb4
- 2.Qd4#
- 2.Qd5#
- 1...Bc5
- 2.Sa5#
- 2.Se5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd5#
- 2.Qf7#
- 1...Bf6
- 2.Sa5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd5#
- 2.Qf7#
- 1...Bd8
- 2.Se5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 2.Qf7#
- 1...Bd6+!
- threat
- 1.Sd4+?
- Keys
- 1.Bc5!
- threat
- 2.Sa5#
- 2.Se5#
- 1...Kxc5
- 2.Rc3#
- 1...Bxc5
- 2.Qf7#
- 1...Bd6
- 2.Sa5#
- 1...Bf6
- 2.Sa5#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- B(b);OGATE::QAB(F)
- Tries
- Try
- S(E);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(F),XB(b)
- Refutation
- K(a);P-FLIGHT,XS(E)
- Try
- S(E);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(F),XB(b)
- Refutation
- K(a);P-FLIGHT
- Try
- S(E);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(F),XB(b)
- Refutation
- K(a);P-FLIGHT
- Try
- B(A);
- Threat
- R1(B)
- Vars
- K(a);P-FLIGHT::R(B)
- Refutation
- B(b);
- Try
- B(A);
- Threat
- R1(B)
- Vars
- B(b);OGATE::QAB(F)
- Refutation
- B(b);XB(A)
- Try
- B(A);
- Vars
- B(b);OGATE::QAB(F)
- Refutation
- B(b);P_PINQ(F),XB(A)
- Try
- Q(F);
- Threat
- DUALS(5)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- DUALS(7)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- DUALS(6)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- DUALS(6)
- Refutation
- B(b);CHECK,XQ(F)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- B(b);XB(A)::QAR1(F)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- B(b);XB(A)::QAB1(F)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- DUALS(6)
- Refutation
- B(b);CHECK
- Try
- Actual
- B(A);
- Threat
- DUALS(2)
- Vars
- K(a);P-FLIGHT,XB(A)::R(B)
- B(b);OGATE,SBLOCK,XB(A)::QAB(F)
- B(b);P_PINQ(F)::S(E)
- B(b);::S(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).