MESON Chess Problem Database
Problem Display
PID: 199673 (7b/2K1NQ2/2b1B3/2N1kp2/1pPp3R/2r5/4Prq1/B7 w - - 0 1)
Schmoll, Werner
Schach-Aktiv, 2010
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sxc6#
- 2.Sg6#
- 1...Qh1
- 2.Sg6#
- 1...Qf3
- 2.Sg6#
- 1...Qh3
- 2.Sxc6#
- 2.Sg6#
- 1...Qe4
- 2.Sg6#
- 1...Qd5
- 2.Sg6#
- 1...Qg1
- 2.Sxc6#
- 1...Qh2
- 2.Sxc6#
- 2.Sg6#
- 1...Qg3
- 2.Sxc6#
- 1...Qg5
- 2.Sxc6#
- 1...Qg6
- 2.Sxc6#
- 2.Sxg6#
- 1...Qg7
- 2.Sxc6#
- 1...Qg8
- 2.Sxc6#
- 1...Rxe2
- 2.Qxf5#
- 1...Rff3
- 2.Sxc6#
- 1...Rc1
- 2.Sd3#
- 2.Bxd4#
- 1...Rc2
- 2.Sd3#
- 2.Bxd4#
- 1...Ra3
- 2.Bxd4#
- 1...Rb3
- 2.Bxd4#
- 1...Rd3
- 2.Sxd3#
- 1...Re3
- 2.Bxd4#
- 1...Rcf3
- 2.Sxc6#
- 2.Bxd4#
- 1...Rg3
- 2.Bxd4#
- 1...Rh3
- 2.Bxd4#
- 1...Rxc4
- 2.Sd3#
- 1...Bf3
- 2.Sd7#
- 2.Qxf5#
- 1...Be4
- 2.Sd7#
- 1...Bd5
- 2.Sd7#
- 1...Bb7
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Ba8
- 2.Sd7#
- 1...d3
- 2.Sxd3#
- 1...f4
- 2.Qf5#
- 1...Qf1
- Tries
- 1.Bd5?
- threat
- 2.Sxc6#
- 2.Qe6#
- 1...Qxd5
- 2.Sg6#
- 1...Bxd5
- 2.Sd7#
- 1...Qg6
- 2.Sxg6#
- 1...Qg8
- 2.Sxc6#
- 1...Ba4
- 2.Qe6#
- 1...Bb5
- 2.Qe6#
- 1...Bb7
- 2.Sd7#
- 2.Qe6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba8
- 2.Sd7#
- 2.Qe6#
- 1...Be8
- 2.Qe6#
- 1...Qg4!
- threat
- 1.Bxf5?
- threat
- 2.Qe6#
- 1...Qd5
- 2.Sg6#
- 1...Qg6
- 2.Sxg6#
- 1...Qg8
- 2.Sxc6#
- 1...Bd5
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Qg4!
- threat
- 1.Bc8?
- threat
- 2.Qe6#
- 1...Qd5
- 2.Sg6#
- 1...Qg6
- 2.Sxg6#
- 1...Qg8
- 2.Sxc6#
- 1...Bd5
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Qg4!
- threat
- 1.Re4+?
- 1...Qxe4
- 2.Sg6#
- 1...fxe4
- 2.Sxc6#
- 1...Bxe4!
- 1...Qxe4
- 1.Bd5?
- Keys
- 1.e3!
- threat
- 2.exd4#
- 1...Rxe3
- 2.Bxd4#
- 1...Rxc4
- 2.Sd3#
- 1...dxe3
- 2.Sd3#
- 1...Qe4
- 2.Sg6#
- 1...Qd5
- 2.Sg6#
- 1...Qg4
- 2.Sxc6#
- 1...Rd2
- 2.Qxf5#
- 1...Rf4
- 2.exf4#
- 1...Rd3
- 2.Sxd3#
- 1...Be4
- 2.Sd7#
- 1...d3
- 2.Sxd3#
- 1...f4
- 2.Qf5#
- threat
- 1.e3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 17
- Sets
- Q(b);N_GUARD::S(H)
- Q(b);N_GUARD::S(H),XB(h)
- R(a);N_GUARD,XP(B)::QAR1(I),XP(g)
- R(a);S_CUTQ(b)::S(H),XB(h)
- R(c);OGATE,P_SPINP(e)::B(A),XP(e)
- R(c);N_GUARD,P_SPINP(e)::S(E),XR(c)
- R(c);N_GUARD,P_SPINP(e),XP(C)::S(E)
- B(h);N_GUARD::S(E)
- B(h);N_GUARD::S(E),XB(h)
- P(e);P_SPINR(c)::S(E),XP(e)
- P(g);S_CUTR(a)::QAR1(I)
- Tries
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,XB(F)::S(H)
- B(h);N_GUARD,XB(F)::S(E)
- Q(b);N_GUARD::S(H),XQ(b)
- Q(b);::S(H),XB(h)
- B(h);::QAR1(I)
- B(h);N_GUARD::S(E),XB(h)
- Refutation
- Q(b);
- Try
- B(F);XP(g)
- Threat
- QAR1(I)
- Vars
- Q(b);N_GUARD::S(H)
- Q(b);N_GUARD::S(H),XQ(b)
- Q(b);N_GUARD::S(H),XB(h)
- B(h);N_GUARD::S(E)
- B(h);N_GUARD::S(E),XB(h)
- Refutation
- Q(b);
- Try
- B(F);
- Threat
- QAR1(I)
- Vars
- Q(b);N_GUARD::S(H)
- Q(b);N_GUARD::S(H),XQ(b)
- Q(b);N_GUARD::S(H),XB(h)
- B(h);N_GUARD::S(E)
- B(h);N_GUARD::S(E),XB(h)
- Refutation
- Q(b);
- Try
- R(D);CHECK
- Vars
- Q(b);XR(D)::S(H)
- P(g);XR(D)::S(H),XB(h)
- Refutation
- B(h);XR(D)
- Try
- Actual
- P(B);
- Threat
- P(B),XP(e)
- Vars
- R(c);OGATE,P_SPINP(e),XP(B)::B(A),XP(e)
- R(c);N_GUARD,P_SPINP(e),XP(C)::S(E)
- P(e);P_SPINR(c),XP(B)::S(E)
- Q(b);N_GUARD::S(H)
- Q(b);N_GUARD::S(H),XB(h)
- R(a);N_GUARD::QAR1(I),XP(g)
- R(a);OGATE::P(B),XR(a)
- R(c);N_GUARD,P_SPINP(e)::S(E),XR(c)
- B(h);N_GUARD::S(E)
- P(e);P_SPINR(c)::S(E),XP(e)
- P(g);S_CUTR(a)::QAR1(I)
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).