MESON Chess Problem Database
Problem Display
PID: 271831 (2n2rb1/2K1N3/2Q5/4k3/4N3/1p2P3/8/1Bb5 w - - 0 1)
Gajevskis, A
Sachmatija, 2023
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Sg6#
- 1...Rf6
- 2.Qxf6#
- 1...Rf7
- 2.Qd5#
- 1...Rd8
- 2.Qf6#
- 1...Re8
- 2.Qf6#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Qc3#
- 1...Bf7
- 2.Qf6#
- 1...Bh7
- 2.Qd5#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Rf5
- Tries
- 1.Sf2?
- threat
- 2.Sd3#
- 2.Sg4#
- 2.Sg6#
- 1...Rxf2
- 2.Sg6#
- 1...Sxe7
- 2.Sg4#
- 2.Qd6#
- 1...Be6
- 2.Qc3#
- 1...Sd6
- 2.Qxd6#
- 1...Rf4
- 2.Sd3#
- 2.Sg6#
- 1...Rf6
- 2.Sd3#
- 2.Sg4#
- 2.Qe4#
- 1...Rf7
- 2.Sd3#
- 2.Sg4#
- 1...Rd8
- 2.Sg4#
- 2.Sg6#
- 1...Bc4
- 2.Sg4#
- 2.Sg6#
- 1...Bd5
- 2.Sg4#
- 2.Sg6#
- 1...Bf7
- 2.Sd3#
- 2.Sg4#
- 1...Bh7
- 2.Sg4#
- 1...Bxe3!
- threat
- 1.Sc5?
- threat
- 2.Sd3#
- 2.Sd7#
- 2.Sg6#
- 1...Sxe7
- 2.Sd7#
- 2.Qd6#
- 1...Be6
- 2.Qxe6#
- 1...Sd6
- 2.Qxd6#
- 1...Rf6
- 2.Sd3#
- 2.Sd7#
- 2.Qe4#
- 1...Rf7
- 2.Sd3#
- 2.Sd7#
- 2.Qe6#
- 1...Rd8
- 2.Sg6#
- 1...Bc4
- 2.Sd7#
- 2.Sg6#
- 1...Bd5
- 2.Sd7#
- 2.Sg6#
- 1...Bf7
- 2.Sd3#
- 2.Sd7#
- 1...Bh7
- 2.Sd7#
- 2.Qe6#
- 1...Sb6
- 2.Sd3#
- 2.Sg6#
- 2.Qd6#
- 1...Bxe3!
- threat
- 1.Sg5?
- threat
- 2.Sg6#
- 2.Qc3#
- 1...Sxe7
- 2.Qd6#
- 1...Be6
- 2.Qc3#
- 2.Qxe6#
- 1...Sd6
- 2.Qc3#
- 2.Qxd6#
- 1...Rf4
- 2.Sg6#
- 1...Rf6
- 2.Qe4#
- 2.Qc3#
- 1...Rf7
- 2.Qc3#
- 2.Qe6#
- 1...Rd8
- 2.Sf3#
- 2.Sg6#
- 1...Bb2
- 2.Sg6#
- 1...Bd2
- 2.Sg6#
- 1...Bc4
- 2.Sg6#
- 1...Bf7
- 2.Sf3#
- 2.Qc3#
- 1...Bh7
- 2.Qc3#
- 2.Qe6#
- 1...Bxe3!
- threat
- 1.Sf6?
- threat
- 2.Sg4#
- 2.Sd7#
- 2.Sg6#
- 1...Rxf6
- 2.Qe4#
- 1...Sxe7
- 2.Sg4#
- 2.Sd7#
- 2.Qd6#
- 1...Be6
- 2.Qc3#
- 1...Sd6
- 2.Qxd6#
- 1...Rf7
- 2.Sg4#
- 2.Sd7#
- 1...Rd8
- 2.Sg4#
- 2.Sg6#
- 1...Bf7
- 2.Sg4#
- 2.Sd7#
- 1...Bh7
- 2.Sg4#
- 2.Sd7#
- 1...Sb6
- 2.Sg4#
- 2.Sg6#
- 2.Qd6#
- 1...Bxe3!
- threat
- 1.Qb5+?
- 1...Bd5
- 2.Qxd5#
- 1...Ke6!
- 1...Bd5
- 1.Qc5+?
- 1...Bd5
- 2.Qxd5#
- 1...Ke6!
- 1...Bd5
- 1.Sf2?
- Keys
- 1.Sd2!
- threat
- 2.Sg6#
- 1...Sxe7
- 2.Qd6#
- 1...Be6
- 2.Qc3#
- 1...Sd6
- 2.Qxd6#
- 1...Rf6
- 2.Qe4#
- 1...Rf7
- 2.Sc4#
- 1...Bf7
- 2.Sf3#
- 1...Bh7
- 2.Sc4#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(e);SBLOCK::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);P_PINS(F),S_CUTB(f)::QAR1(D)
- R(e);N_GUARD::QAB1(D)
- B(f);N_GUARD::QAR1(D),XB(f)
- B(f);SBLOCK::QAB(D)
- B(f);S_CUTR(e)::QAB1(D)
- B(f);N_GUARD::QAR1(D)
- S(d);N_GUARD::QAB1(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- R(e);XS(C)::S(F)
- B(f);SBLOCK::QAB(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- B(f);::S(C)
- Refutation
- B(a);XP(B)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- B(f);N_GUARD::QAR1(D),XB(f)
- S(d);N_GUARD::QAB1(D),XS(d)
- R(e);::S(F)
- Refutation
- B(a);XP(B)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XS(F)::QAB1(D)
- R(e);::S(F)
- B(a);::S(F)
- B(f);::S(F)
- Refutation
- B(a);XP(B)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- R(e);SBLOCK,XS(C)::QAR1(D)
- B(f);SBLOCK::QAB(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- Refutation
- B(a);XP(B)
- Try
- Q(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(D),XB(f)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(D),XB(f)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- S(C);
- Threat
- S(F)
- Vars
- S(d);N_GUARD,XS(F)::QAB1(D)
- B(f);SBLOCK::QAB(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- R(e);SBLOCK::QAR1(D)
- R(e);P_PINS(F),S_CUTB(f)::S(C)
- B(f);S_CUTR(e)::S(C)
- B(f);N_GUARD::S(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).