MESON Chess Problem Database
Problem Display
PID: 262916 (bB2N3/3Q4/8/1p5n/3Nk3/1P1nbpR1/K4P2/1B6 w - - 0 1)
Egorov, Gennady Sergeevich
Shanshin, Valery Yurevich
3rd Prize, Zadachi i Etyudi, 2008
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Sxg3
- 2.Sf6#
- 1...Sf4
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Sxg3
- Tries
- 1.Se2?
- threat
- 2.Sc3#
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bxf2
- 2.Qe6#
- 2.Qxd3#
- 1...fxe2
- 2.Bxd3#
- 2.Rxe3#
- 2.Qxd3#
- 2.f3#
- 1...Bd2
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bf4
- 2.Sc3#
- 2.Bxd3#
- 2.Qxd3#
- 1...Bd5
- 2.Qh7#
- 1...Sf4
- 2.Sc3#
- 2.Sf6#
- 1...Sg7
- 2.Sc3#
- 2.Sf6#
- 2.Bxd3#
- 2.Qxd3#
- 1...b4
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bd4!
- threat
- 1.Sxf3?
- threat
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bxf2
- 2.Sd2#
- 2.Sg5#
- 2.Qe6#
- 2.Qxd3#
- 1...Bd4
- 2.Sd2#
- 2.Sg5#
- 1...Bf4
- 2.Bxd3#
- 2.Qxd3#
- 1...Bd5
- 2.Qh7#
- 1...Sf4
- 2.Sg5#
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 2.Bxd3#
- 2.Qxd3#
- 1...Sxg3!
- threat
- 1.Sxb5?
- threat
- 2.Sc3#
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bxf2
- 2.Qe6#
- 2.Qxd3#
- 1...Bd2
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bf4
- 2.Sc3#
- 2.Bxd3#
- 2.Qxd3#
- 1...Bd5
- 2.Qh7#
- 1...Sf4
- 2.Sc3#
- 2.Sf6#
- 1...Sg7
- 2.Sc3#
- 2.Sf6#
- 2.Bxd3#
- 2.Qxd3#
- 1...Bd4!
- threat
- 1.Sc6?
- threat
- 2.Bxd3#
- 2.Qe6#
- 2.Qxd3#
- 1...Bxf2
- 2.Qe6#
- 2.Qxd3#
- 1...Bxc6
- 2.Bxd3#
- 2.Qxd3#
- 1...Bf4
- 2.Bxd3#
- 2.Qxd3#
- 1...Sf4
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 2.Bxd3#
- 2.Qxd3#
- 1...Bd4!
- threat
- 1.Rxf3?
- threat
- 2.Rxe3#
- 1...Bxf2
- 2.Bxd3#
- 1...Bxd4
- 2.Qf5#
- 1...Bc1
- 2.Bxd3#
- 1...Bd2
- 2.Bxd3#
- 1...Bf4
- 2.Bxd3#
- 1...Bg5
- 2.Bxd3#
- 1...Bh6
- 2.Bxd3#
- 1...Bd5!
- threat
- 1.Rg4+?
- 1...Sf4
- 2.Sf6#
- 1...Bf4!
- 1...Sf4
- 1.Qxb5?
- threat
- 2.Qe5#
- 1...Kxd4
- 2.Qc4#
- 1...Bxd4
- 2.Bxd3#
- 1...Bd5
- 2.Qxd3#
- 1...Bf4!
- threat
- 1.Se2?
- Keys
- 1.Se6!
- threat
- 2.Bxd3#
- 2.Qxd3#
- 1...Kf5
- 2.Sc5#
- 1...Bxf2
- 2.Qxd3#
- 1...Bd4
- 2.Sg5#
- 1...Bd5
- 2.Qh7#
- 1...Sf4
- 2.Sg5#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- S(f);N_GUARD,XR(E)::S(I)
- S(f);N_GUARD::S(I)
- S(f);N_GUARD::S(I),XS(f)
- Tries
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- B(g);P_PINP(D),SBLOCK::QAB(G)
- Refutation
- B(b);
- Try
- S(F);XP(c)
- Threat
- DUALS(3)
- Vars
- B(g);P_PINP(D),SBLOCK::QAB(G)
- Refutation
- S(f);XR(E)
- Try
- S(F);XP(e)
- Threat
- DUALS(4)
- Vars
- B(g);P_PINP(D),SBLOCK::QAB(G)
- Refutation
- B(b);
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- S(f);N_GUARD::S(I)
- Refutation
- B(b);
- Try
- R(E);XP(c)
- Threat
- R1(E),XB(b)
- Vars
- B(b);XP(C)::B(A),XS(a)
- B(b);SBLOCK,XS(F)::QAB1(G)
- B(b);::B(A),XS(a)
- Refutation
- B(g);P_PINP(D)
- Try
- R(E);CHECK
- Vars
- S(f);::S(I)
- Refutation
- B(b);P_SPINB(b)
- Try
- Q(G);XP(e)
- Threat
- QAR1(G)
- Vars
- K(d);N_SPINS(a),OGATEB,P-FLIGHT,XS(F)::QAR1(G)
- B(b);SBLOCK,XS(F)::B(A),XS(a)
- B(g);P_PINP(D),SBLOCK::QAB1(G),XS(a)
- Refutation
- B(b);
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- K(d);S_CUTB(b),S_FLIGHT::QAB(G)+S(F)
- B(b);XP(C)::QAB1(G),XS(a)
- B(b);N_GUARD::S(F)
- B(g);P_PINP(D),SBLOCK::QAB(G)
- S(f);S_CUTB(b)::S(F)
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).