MESON Chess Problem Database
Problem Display
PID: 259426 (K7/8/4P3/8/8/3R4/kp1pNQ2/b2N4 w - - 0 1)
Cheylan, Yves
Hlas l'udu, 1973
#2
6 + 4
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 1...b1R
- 2.Qa7#
- 1...b1Q
- Tries
- 1.Ra3+?
- 1...Kb1
- 2.Qf5#
- 1...Kxa3!
- 1...Kb1
- 1.Rc3?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.Rf3?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.Rg3?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.Rh3?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.Qd4?
- 1...b1Q
- 2.Qa7#
- 2.Qa4#
- 1...b1S
- 2.Qc4#
- 2.Qd5#
- 1...b1B
- 2.Qa7#
- 2.Qa4#
- 2.Qc4#
- 2.Qd5#
- 1...b1R
- 2.Qa7#
- 2.Qa4#
- 1...Kb1!
- 1...b1Q
- 1.Qh4?
- 1...b1Q
- 2.Qa4#
- 1...b1S
- 2.Qc4#
- 1...b1B
- 2.Qa4#
- 2.Qc4#
- 1...b1R
- 2.Qa4#
- 1...Kb1!
- 1...b1Q
- 1.Qc5?
- 1...b1Q
- 2.Ra3#
- 2.Qa3#
- 2.Qa7#
- 2.Qa5#
- 1...b1S
- 2.Qc4#
- 2.Qd5#
- 1...b1B
- 2.Ra3#
- 2.Qa3#
- 2.Qa7#
- 2.Qc4#
- 2.Qa5#
- 2.Qd5#
- 1...b1R
- 2.Ra3#
- 2.Qa3#
- 2.Qa7#
- 2.Qa5#
- 1...Kb1!
- 1...b1Q
- 1.Qb6?
- 1...b1Q
- 2.Qa5#
- 2.Qa7#
- 2.Qa6#
- 1...b1S
- 2.Qb3#
- 1...b1B
- 2.Qa5#
- 2.Qa7#
- 2.Qb3#
- 2.Qa6#
- 1...b1R
- 2.Qa5#
- 2.Qa7#
- 2.Qa6#
- 1...Kb1!
- 1...b1Q
- 1.Qf3?
- 1...b1Q
- 2.Ra3#
- 1...b1S
- 2.Qd5#
- 1...b1B
- 2.Ra3#
- 2.Qd5#
- 1...b1R
- 2.Ra3#
- 1...Kb1!
- 1...b1Q
- 1.Qf4?
- 1...b1Q
- 2.Qa4#
- 1...b1S
- 2.Qc4#
- 1...b1B
- 2.Qa4#
- 2.Qc4#
- 1...b1R
- 2.Qa4#
- 1...Kb1!
- 1...b1Q
- 1.Qf7?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.e7#
- 1...b1B
- 2.Qa7#
- 2.e7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.e7?
- 1...b1Q
- 2.Qa7#
- 1...b1S
- 2.Sc1#
- 2.Qf7#
- 1...b1B
- 2.Sc1#
- 2.Qa7#
- 2.Qf7#
- 1...b1R
- 2.Qa7#
- 1...Kb1!
- 1...b1Q
- 1.Ra3+?
- Keys
- 1.Qf5!
- 1...Kb1
- 2.Ra3#
- 1...b1Q
- 2.Qa5#
- 1...b1S
- 2.Qd5#
- 1...b1B
- 2.Qa5#
- 2.Qd5#
- 1...b1R
- 2.Qa5#
- 1...Kb1
- 1.Qf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- P(c);SBLOCK::QAR(C)
- P(c);N_GUARD,SBLOCK,S_CUTP(d),S_CUTP(d),S_CUTP(d),S_CUTP(d)::S(B)
- Tries
- Try
- R(D);CHECK
- Vars
- K(b);N_GUARD,S_FLIGHT::QAB(C)
- Refutation
- K(b);P-FLIGHT,XR(D)
- Try
- R(D);
- Vars
- P(c);SBLOCK::QAR(C)
- P(c);N_GUARD,SBLOCK,S_CUTP(d),S_CUTP(d),S_CUTP(d),S_CUTP(d)::S(B)
- Refutation
- K(b);S_FLIGHT
- Try
- R(D);
- Vars
- P(c);SBLOCK::QAR(C)
- P(c);N_GUARD,SBLOCK,S_CUTP(d),S_CUTP(d),S_CUTP(d),S_CUTP(d)::S(B)
- Refutation
- K(b);S_FLIGHT
- Try
- R(D);
- Vars
- P(c);SBLOCK::QAR(C)
- P(c);N_GUARD,SBLOCK,S_CUTP(d),S_CUTP(d),S_CUTP(d),S_CUTP(d)::S(B)
- Refutation
- K(b);S_FLIGHT
- Try
- R(D);
- Vars
- P(c);SBLOCK::QAR(C)
- P(c);N_GUARD,SBLOCK,S_CUTP(d),S_CUTP(d),S_CUTP(d),S_CUTP(d)::S(B)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Vars
- P(c);SBLOCK::QAR2(C)
- P(c);SBLOCK::QAB(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Vars
- P(c);::QAB1(C)
- Refutation
- K(b);P_SPINP(c),S_FLIGHT
- Try
- Q(C);
- Vars
- P(c);SBLOCK::R1(D)
- P(c);SBLOCK::QAB(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Vars
- P(c);SBLOCK::QAR2(C)
- P(c);SBLOCK::QAB(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(C);
- Vars
- P(c);SBLOCK::QAR(C)
- P(c);SBLOCK::QAB(C)+P(E)
- Refutation
- K(b);S_FLIGHT
- Try
- P(E);
- Vars
- P(c);SBLOCK::QAR(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- Q(C);
- Vars
- K(b);N_GUARD,S_FLIGHT::QAB(C)+R(D)
- P(c);SBLOCK::QAR(C)
- P(c);SBLOCK::QAB(C)
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).