MESON Chess Problem Database
Problem Display
PID: 177787 (1B6/1p1NN3/2B2bQ1/2R5/1p1k1p2/3P1q2/1n1P4/K2b4 w - - 0 1)
Mochalkin, Oleksandr Viktorovich
Shedey, Sergey Oleksandrovich
Sahs (Latvia), 1988
#2
9 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Rd5#
- 1...Qe4
- 2.Qxe4#
- 1...Qg4
- 2.Rd5#
- 2.Qe4#
- 1...Qd5
- 2.Rxd5#
- 1...Qh5
- 2.Qe4#
- 1...Qf1
- 2.Rd5#
- 2.Qe4#
- 1...Qf2
- 2.Rd5#
- 2.Qe4#
- 1...Qxd3
- 2.Qxf6#
- 1...Qe3
- 2.Rd5#
- 1...Qg3
- 2.Rd5#
- 2.Qe4#
- 1...Qh3
- 2.Rd5#
- 2.Qe4#
- 1...Bh4
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Bg5
- 2.Be5#
- 1...Bxe7
- 2.Be5#
- 1...Sxd3
- 2.Sf5#
- 1...Sa4
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Qe2
- Tries
- 1.Bxf3?
- threat
- 2.Rd5#
- 2.Qe4#
- 1...Sxd3
- 2.Sf5#
- 2.Qe4#
- 1...Bb3
- 2.Qe4#
- 1...Bxf3!
- threat
- 1.Ba7?
- threat
- 2.Rc4#
- 2.Rd5#
- 1...Qxd3
- 2.Qxf6#
- 1...Sxd3
- 2.Sf5#
- 1...Qe4
- 2.Rd5#
- 2.Qxe4#
- 1...Qd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 1...b6!
- threat
- 1.Rc3?
- threat
- 2.Sf5#
- 2.Qxf6#
- 1...Qxc6
- 2.Qg1#
- 1...Qxd3
- 2.Qxf6#
- 1...Bxe7
- 2.Be5#
- 1...Sxd3
- 2.Sf5#
- 1...bxc6
- 2.Qxf6#
- 1...Qe2
- 2.Sf5#
- 1...Qe4
- 2.Qxe4#
- 1...Qg4
- 2.Qe4#
- 2.Qxf6#
- 1...Qd5
- 2.Qg1#
- 1...Qh5
- 2.Qe4#
- 2.Qg1#
- 1...Qe3
- 2.Sf5#
- 1...Qh3
- 2.Qe4#
- 2.Qxf6#
- 1...Bh4
- 2.Sf5#
- 2.Be5#
- 1...Be5
- 2.Sf5#
- 2.Bxe5#
- 1...Bg5
- 2.Sf5#
- 2.Be5#
- 1...Bg7
- 2.Sf5#
- 2.Qxg7#
- 1...Bh8
- 2.Sf5#
- 1...Sc4
- 2.Sf5#
- 2.Rxc4#
- 1...bxc3!
- threat
- 1.Qg1+?
- 1...Qf2
- 2.Rd5#
- 1...Qe3
- 2.Rd5#
- 1...Kxd3!
- 1...Qf2
- 1.Bxf3?
- Keys
- 1.Bb5!
- threat
- 2.Sf5#
- 2.Qxf6#
- 1...Qxd3
- 2.Rd5#
- 1...Bxe7
- 2.Be5#
- 1...Sxd3
- 2.Rc4#
- 1...Qe2
- 2.Sf5#
- 2.Rd5#
- 1...Qe4
- 2.Qxe4#
- 1...Qg4
- 2.Rd5#
- 2.Qe4#
- 2.Qxf6#
- 1...Qd5
- 2.Rxd5#
- 2.Qg1#
- 1...Qh5
- 2.Qe4#
- 2.Qg1#
- 1...Qc6
- 2.Sf5#
- 2.Qg1#
- 1...Qe3
- 2.Sf5#
- 2.Rd5#
- 1...Qh3
- 2.Rd5#
- 2.Qe4#
- 2.Qxf6#
- 1...Bh4
- 2.Sf5#
- 2.Be5#
- 1...Be5
- 2.Sf5#
- 2.Bxe5#
- 1...Bg5
- 2.Sf5#
- 2.Be5#
- 1...Bg7
- 2.Sf5#
- 2.Qxg7#
- 1...Bh8
- 2.Sf5#
- 1...Sc4
- 2.Rxc4#
- threat
- 1.Bb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- Q(c);N_GUARD::R1(D),XQ(c)
- Q(c);N_GUARD::QAR1(F)
- Q(c);SBLOCK,XP(C)::QAB(F),XB(g)
- B(g);N_GUARD::B(I)
- B(g);N_GUARD::B(I),XB(g)
- B(g);N_GUARD,XS(H)::B(I)
- S(b);SBLOCK,XP(C)::S(H)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- Tries
- Try
- B(E);XQ(c)
- Threat
- DUALS(2)
- Vars
- B(a);::QAR1(F)
- Refutation
- B(a);XB(E)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- Q(c);SBLOCK,XP(C)::QAB(F),XB(g)
- S(b);SBLOCK,XP(C)::S(H)
- Refutation
- P(h);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XB(E)::QAB(F)
- Q(c);XP(C)::QAB(F),XB(g)
- B(g);N_GUARD,XS(H)::B(I)
- S(b);XP(C)::S(H)
- P(h);XB(E)::QAB(F),XB(g)
- Q(c);::S(H)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- Q(c);N_GUARD::QAB(F)
- B(g);::S(H)
- Refutation
- P(d);XR(D)
- Try
- Q(F);CHECK
- Vars
- Q(c);P_SPINQ(c)::R1(D)
- Refutation
- K(e);P-FLIGHT,XP(C)
- Try
- Actual
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XP(C)::R1(D)
- B(g);N_GUARD,XS(H)::B(I)
- S(b);N_GUARD,XP(C)::R1(D)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- B(g);::S(H)
- S(b);N_GUARD::R1(D),XS(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).