MESON Chess Problem Database
Problem Display
PID: 177783 (8/2K1Np2/2p4n/2B1kPpN/3R4/p3rn2/4Q3/2b5 w - - 0 1)
Mochalkin, Oleksandr Viktorovich
Sp. HM., Sahs (Latvia), 1981
#2
7 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bb2
- 2.Qxe3#
- 1...Re4
- Tries
- 1.Qd3?
- threat
- 2.Sxc6#
- 2.Bd6#
- 1...Sxd4
- 2.Bxd4#
- 2.Bd6#
- 2.Qxd4#
- 1...Sxf5
- 2.Qxf5#
- 1...Re4
- 2.Bd6#
- 2.Rxe4#
- 2.Qxe4#
- 1...Rxd3!
- threat
- 1.Qxf3?
- threat
- 2.Sxc6#
- 1...Sxf5
- 2.Qxf5#
- 1...Rxf3!
- threat
- 1.Qc2?
- threat
- 2.Sxc6#
- 1...Sxd4
- 2.Bd6#
- 1...Sxf5
- 2.Qxf5#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...Rd3!
- threat
- 1.Qd3?
- Keys
- 1.Qc4!
- threat
- 2.Bd6#
- 1...Sxd4
- 2.Qxd4#
- 1...Sxf5
- 2.Sxc6#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::QAR2(A),XR(c)
- Tries
- Try
- Q(A);N_PINR(c)
- Threat
- DUALS(2)
- Vars
- S(h);OGATE,XP(D)::QAR1(A),XS(h)
- Refutation
- R(c);XQ(A)
- Try
- Q(A);N_PINR(c),XS(d)
- Threat
- S(G),XP(g)
- Vars
- S(h);OGATE,XP(D)::QAR1(A),XS(h)
- Refutation
- R(c);XQ(A)
- Try
- Q(A);N_PINR(c)
- Threat
- S(G),XP(g)
- Vars
- S(d);SBLOCK,XR(B)::B(C)
- S(h);OGATE,XP(D)::QAR1(A),XS(h)
- Refutation
- R(c);
- Try
- Actual
- Q(A);N_PINR(c)
- Threat
- B(C)
- Vars
- S(d);OGATE,XR(B)::QAB1(A),XS(d)
- S(h);SBLOCK,XP(D)::S(G),XP(g)
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).