MESON Chess Problem Database
Problem Display
PID: 109175 (3K4/4p1N1/3P4/4k3/2QR4/4B2b/6r1/8 w - - 0 1)
Pypa, Nikolai
Eirka, 1957
#2
6 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Rg4
- Tries
- 1.Kxe7?
- threat
- 2.Bf4#
- 2.Re4#
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Rb2
- 2.Bf4#
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 2.Qc5#
- 1...Rc2
- 2.Bf4#
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 1...Rd2
- 2.Bf4#
- 2.Re4#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Rf2
- 2.Re4#
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Rg4
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Bf5
- 2.Bf4#
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Be6
- 2.Bf4#
- 2.Re4#
- 2.Qxe6#
- 1...Bd7
- 2.Bf4#
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 2.Qc5#
- 1...Rxg7+!
- threat
- 1.Re4+?
- 1...Kxd6
- 2.Se8#
- 2.Qc5#
- 1...Kf6!
- 1...Kxd6
- 1.Kxe7?
- Keys
- 1.Rg4!
- threat
- 2.Qe6#
- 2.Qd4#
- 1...Kxd6
- 2.Qe6#
- 2.Qc5#
- 1...Kf6
- 2.Qe6#
- 2.Qf4#
- 1...Rxg4
- 2.Qe6#
- 1...Bxg4
- 2.Qd4#
- 1...Rd2
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- 2.Qd4#
- threat
- 1.Rg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(a);S_CUTB(b)::QAR1(B)
- B(b);N_GUARD::QAR1(B),XB(b)
- Tries
- Try
- K(F);S_FLIGHT,XP(d)
- Threat
- DUALS(6)
- Refutation
- R(a);CHECK,XS(E)
- Try
- R(C);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(a);XR(C)::QAR1(B)
- B(b);XR(C)::QAB1(B)
- R(a);P_PINP(D)::QAR1(B)
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).