MESON Chess Problem Database
Problem Display
PID: 178721 (8/5n2/4pnRR/p3pk2/Q3b3/3p3N/3N4/4K3 w - - 0 1)
Maleika, Gerhard
7th Comm., Problem Observer Block-Threat Ty., 2009-2010
#2
6 + 8
SOLUTION
- SOUND
- Sets
- 1...Bh1
- 2.Rxf6#
- 1...Bg2
- 2.Rxf6#
- 1...Bf3
- 2.Rxf6#
- 1...Bd5
- 2.Rxf6#
- 1...Bc6
- 2.Rxf6#
- 1...Bb7
- 2.Rxf6#
- 1...Ba8
- 2.Rxf6#
- 1...Sg4
- 2.Qxe4#
- 1...Sd5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Sh7
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Sg8
- 2.Qxe4#
- 1...Sg5
- 2.Rxg5#
- 1...Sd6
- 2.Rg5#
- 1...Sxh6
- 2.Rg5#
- 1...Sd8
- 2.Rg5#
- 1...Sh8
- 2.Rg5#
- 1...Bh1
- Tries
- 1.Kd1?
- 1...Sxh6
- 2.Rg5#
- 1...Sg5
- 2.Rxg5#
- 1...Bh1
- 2.Rxf6#
- 1...Bg2
- 2.Rxf6#
- 1...Bd5
- 2.Rxf6#
- 1...Bc6
- 2.Rxf6#
- 1...Bb7
- 2.Rxf6#
- 1...Ba8
- 2.Rxf6#
- 1...Sg4
- 2.Qxe4#
- 1...Sd5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Sh7
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Sg8
- 2.Qxe4#
- 1...Sd6
- 2.Rg5#
- 1...Sd8
- 2.Rg5#
- 1...Sh8
- 2.Rg5#
- 1...Bf3+!
- 1...Sxh6
- 1.Kf1?
- 1...Sxh6
- 2.Rg5#
- 1...Sg5
- 2.Rxg5#
- 1...Bh1
- 2.Rxf6#
- 1...Bf3
- 2.Rxf6#
- 1...Bd5
- 2.Rxf6#
- 1...Bc6
- 2.Rxf6#
- 1...Bb7
- 2.Rxf6#
- 1...Ba8
- 2.Rxf6#
- 1...Sg4
- 2.Qxe4#
- 1...Sd5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Sh7
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Sg8
- 2.Qxe4#
- 1...Sd6
- 2.Rg5#
- 1...Sd8
- 2.Rg5#
- 1...Sh8
- 2.Rg5#
- 1...Bg2+!
- 1...Sxh6
- 1.Kf2?
- 1...Sxh6
- 2.Rg5#
- 1...Sg5
- 2.Rxg5#
- 1...Bh1
- 2.Rxf6#
- 1...Bg2
- 2.Rxf6#
- 1...Bf3
- 2.Rxf6#
- 1...Bd5
- 2.Rxf6#
- 1...Bc6
- 2.Rxf6#
- 1...Bb7
- 2.Rxf6#
- 1...Ba8
- 2.Rxf6#
- 1...Sd5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Sh7
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Sg8
- 2.Qxe4#
- 1...Sd6
- 2.Rg5#
- 1...Sd8
- 2.Rg5#
- 1...Sh8
- 2.Rg5#
- 1...Sg4+!
- 1...Sxh6
- 1.Sf1?
- threat
- 2.Se3#
- 2.Sg3#
- 1...Sxh6
- 2.Rg5#
- 1...Sg5
- 2.Se3#
- 2.Rxg5#
- 1...Sg4
- 2.Sg3#
- 1...Sd5
- 2.Sg3#
- 1...Sh5
- 2.Se3#
- 1...d2+!
- threat
- 1.Sf3?
- threat
- 2.Sh4#
- 1...Bxf3
- 2.Rxf6#
- 1...Sg5
- 2.Rxg5#
- 1...d2+!
- threat
- 1.Rh5+?
- 1...Sxh5
- 2.Qxe4#
- 1...Sg5
- 2.Rhxg5#
- 2.Rgxg5#
- 1...Kxg6!
- 1...Sxh5
- 1.Qc4?
- 1...Sxh6
- 2.Rg5#
- 1...Sg5
- 2.Rxg5#
- 1...Bh1
- 2.Rxf6#
- 1...Bg2
- 2.Rxf6#
- 1...Bf3
- 2.Rxf6#
- 1...Bd5
- 2.Rxf6#
- 1...Bc6
- 2.Rxf6#
- 1...Bb7
- 2.Rxf6#
- 1...Ba8
- 2.Rxf6#
- 1...Sg4
- 2.Qxe6#
- 2.Qxe4#
- 1...Sd5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe6#
- 2.Qxe4#
- 1...Sd7
- 2.Qxe6#
- 2.Qxe4#
- 1...Sh7
- 2.Qxe6#
- 2.Qxe4#
- 1...Se8
- 2.Qxe6#
- 2.Qxe4#
- 1...Sg8
- 2.Qxe6#
- 2.Qxe4#
- 1...Sd6
- 2.Rg5#
- 1...Sd8
- 2.Rg5#
- 1...Sh8
- 2.Rg5#
- 1...a4!
- 1...Sxh6
- 1.Kd1?
- Keys
- 1.Qd1!
- threat
- 2.Rxf6#
- 1...Sxh6
- 2.Rg5#
- 1...Bf3
- 2.Qxf3#
- 1...Sg4
- 2.Qxg4#
- 1...Sd5
- 2.Qg4#
- 1...Sh5
- 2.Qg4#
- 1...Sd7
- 2.Qg4#
- 1...Sh7
- 2.Qg4#
- 1...Se8
- 2.Qg4#
- 1...Sg8
- 2.Qg4#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- B(b);::R1(E),XS(g)
- S(g);N_GUARD::QAB1(D),XB(b)
- S(h);N_GUARD::R1(E),XS(h)
- S(h);N_GUARD::R1(E)
- S(h);N_GUARD,XR(F)::R1(E)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- S(h);N_GUARD::R1(E),XS(h)
- B(b);::R1(E),XS(g)
- S(g);N_GUARD::QAB1(D),XB(b)
- S(h);N_GUARD::R1(E)
- Refutation
- B(b);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- S(h);N_GUARD::R1(E),XS(h)
- B(b);::R1(E),XS(g)
- S(g);N_GUARD::QAB1(D),XB(b)
- S(h);N_GUARD::R1(E)
- Refutation
- B(b);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- S(h);N_GUARD::R1(E),XS(h)
- B(b);::R1(E),XS(g)
- S(g);N_GUARD::QAB1(D),XB(b)
- S(h);N_GUARD::R1(E)
- Refutation
- S(g);CHECK
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- S(g);::S(B)
- Refutation
- P(a);CHECK
- Try
- S(B);
- Threat
- S(B)
- Vars
- B(b);XS(B)::R1(E),XS(g)
- S(h);N_GUARD::R1(E),XS(h)
- Refutation
- P(a);CHECK
- Try
- R(F);CHECK
- Vars
- S(g);XR(F)::QAB1(D),XB(b)
- Refutation
- K(e);S_FLIGHT,XR(E)
- Try
- Q(D);
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- S(h);N_GUARD::R1(E),XS(h)
- B(b);::R1(E),XS(g)
- S(g);N_GUARD::QAB1(D),XB(b)
- S(h);N_GUARD::R1(E)
- Refutation
- P(c);
- Try
- Actual
- Q(D);
- Threat
- R1(E),XS(g)
- Vars
- S(h);N_GUARD,XR(F)::R1(E)
- B(b);N_GUARD::QAR2(D),XB(b)
- S(g);N_GUARD::QAB1(D),XS(g)
- S(g);N_GUARD::QAB1(D)
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).