MESON Chess Problem Database
Problem Display
PID: 276903 (8/4Q3/1N1npn2/4k3/4Pp2/2P5/2P3KB/4RN2 w - - 0 1)
Amirov, Talip Khasanovich
Stella Polaris, 1971
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sde8
- 2.Sc4#
- 1...Sg4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sh5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...Sfe8
- 2.Sd7#
- 1...Sg8
- 2.Sd7#
- 1...Sc4
- Tries
- 1.Sg3?
- 1...Sdxe4
- 2.Qc7#
- 1...Sfxe4
- 2.Qg7#
- 1...fxg3
- 2.Bxg3#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sde8
- 2.Sc4#
- 1...Sg4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sh5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...Sfe8
- 2.Sd7#
- 1...Sg8
- 2.Sd7#
- 1...f3+!
- 1...Sdxe4
- 1.Qf8?
- 1...Sfxe4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sde8
- 2.Sc4#
- 1...Sg4
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sd5
- 2.Sd7#
- 1...Sh5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sh7
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sfe8
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg8
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sdxe4!
- 1...Sfxe4
- 1.Qc7?
- threat
- 2.Sc4#
- 1...Sg4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sh5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...Se8
- 2.Sd7#
- 1...Sg8
- 2.Sd7#
- 1...Sxe4!
- threat
- 1.Qf7?
- 1...Sxf7
- 2.Sc4#
- 1...Sfxe4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sde8
- 2.Sc4#
- 1...Sg4
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sd5
- 2.Sd7#
- 1...Sh5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sh7
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sfe8
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg8
- 2.Sd7#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sdxe4!
- 1...Sxf7
- 1.Qg7?
- threat
- 2.Sd7#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Sxe4!
- threat
- 1.Sg3?
- Keys
- 1.Se3!
- 1...Kxe4
- 2.Qxe6#
- 1...Sdxe4
- 2.Sbc4#
- 1...Sfxe4
- 2.Sd7#
- 1...Sc4
- 2.Sexc4#
- 1...Sb5
- 2.Sec4#
- 1...Sf5
- 2.Sec4#
- 1...Sb7
- 2.Sec4#
- 1...Sf7
- 2.Sec4#
- 1...Sc8
- 2.Sec4#
- 1...Sde8
- 2.Sec4#
- 1...Sg4
- 2.Sxg4#
- 1...Sd5
- 2.Sg4#
- 1...Sh5
- 2.Sg4#
- 1...Sd7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...Sfe8
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Kxe4
- 1.Se3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- Tries
- Try
- S(B);N_PINP(a),P_PINP(d)
- Vars
- S(c);OGATEB,P_SPINS(c),XP(G)::QAB(I)
- S(e);OGATEB,P_SPINS(e),XP(G)::QAB(I)
- P(a);N_SPINP(d),OGATE,P_SPINP(a),XS(B)::B(E),XP(a)
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- Refutation
- P(a);CHECK
- Try
- Q(I);
- Vars
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD::S(H)
- S(e);N_GUARD::S(H)
- Refutation
- S(c);P_SPINS(c),XP(G)
- Try
- Q(I);P_PINS(c)
- Threat
- S(H)
- Vars
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- Refutation
- S(e);N_SPINS(c),P_SPINS(e),XP(G)
- Try
- Q(I);
- Vars
- S(c);N_GUARD,XQ(I)::S(H)
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD::S(H)
- S(e);N_GUARD::S(H)
- Refutation
- S(c);P_SPINS(c),XP(G)
- Try
- Q(I);P_PINS(e)
- Threat
- S(H)
- Vars
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD::S(H)
- Refutation
- S(c);N_SPINS(e),P_SPINS(c),XP(G)
- Try
- Actual
- S(B);
- Vars
- K(b);N_GUARD,N_SPINP(a),P-FLIGHT,P_SPINP(d),XP(G)::QAR2(I),XP(d)
- S(c);N_GUARD,SBLOCK,XP(G)::S(H)
- S(e);N_GUARD,SBLOCK,XP(G)::S(H)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(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).