MESON Chess Problem Database
Problem Display
PID: 178713 (1r6/B4Pp1/1r1p2Qp/NPk4P/p1Pp4/P1n5/3N4/5K2 w - - 0 1)
Maleika, Gerhard
7th HM., Problem Observer Block-Threat Ty., 2009-2010
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 1...Rd8
- 2.Sb7#
- 1...Re8
- 2.Sb7#
- 1...Rf8
- 2.Sb7#
- 1...Rg8
- 2.Sb7#
- 1...Rh8
- 2.Sb7#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sxb5
- 2.Se4#
- 1...Sd5
- 2.Se4#
- 1...d3
- 2.Qg1#
- 1...d5
- 2.Qc6#
- 1...Rb7
- Tries
- 1.Ke1?
- 1...Sxb5
- 2.Se4#
- 1...d3
- 2.Qg1#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 1...Rd8
- 2.Sb7#
- 1...Rf8
- 2.Sb7#
- 1...Rg8
- 2.Sb7#
- 1...Rh8
- 2.Sb7#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sd5
- 2.Se4#
- 1...d5
- 2.Qc6#
- 1...Re8+!
- 1...Sxb5
- 1.Kg2?
- 1...Sxb5
- 2.Se4#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 1...Rd8
- 2.Sb7#
- 1...Re8
- 2.Sb7#
- 1...Rf8
- 2.Sb7#
- 1...Rg8
- 2.Sb7#
- 1...Rh8
- 2.Sb7#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sd5
- 2.Se4#
- 1...d5
- 2.Qc6#
- 1...d3!
- 1...Sxb5
- 1.Qb1?
- threat
- 2.Qb4#
- 1...Sxb1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Sd5
- 2.Se4#
- 1...d3!
- threat
- 1.Qf5+?
- 1...Sd5
- 2.Se4#
- 2.Qxd5#
- 1...d5!
- 1...Sd5
- 1.Qg2?
- threat
- 2.Qc6#
- 1...d3
- 2.Qg1#
- 2.Qf2#
- 1...Rc8
- 2.Sb7#
- 1...Se4
- 2.Sxe4#
- 1...Sd5
- 2.Se4#
- 2.Qxd5#
- 1...d5!
- threat
- 1.Qg5+?
- 1...Sd5
- 2.Se4#
- 2.Qxd5#
- 1...d5
- 2.Qe7#
- 1...hxg5!
- 1...Sd5
- 1.Qxg7?
- 1...Sxb5
- 2.Se4#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 1...Rd8
- 2.Sb7#
- 1...Re8
- 2.Sb7#
- 1...Rf8
- 2.Sb7#
- 1...Rg8
- 2.Sb7#
- 1...Rh8
- 2.Sb7#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sd5
- 2.Se4#
- 1...d3
- 2.Qg1#
- 1...d5!
- 1...Sxb5
- 1.f8Q?
- threat
- 2.Qfxd6#
- 2.Qgxd6#
- 1...Sxb5
- 2.Se4#
- 2.Qgf5#
- 1...Rd8
- 2.Sb7#
- 1...Se4
- 2.Sxe4#
- 2.Qgf5#
- 1...Rxf8+!
- threat
- 1.f8S?
- threat
- 2.Se6#
- 2.Sd7#
- 1...d3
- 2.Se6#
- 2.Qg1#
- 1...Rb7
- 2.Sxb7#
- 2.Se6#
- 1...Rd8
- 2.Sb7#
- 2.Se6#
- 1...Re8
- 2.Sb7#
- 2.Sd7#
- 1...d5
- 2.Sd7#
- 2.Qc6#
- 1...Rxf8+!
- threat
- 1.f8B?
- threat
- 2.Bxd6#
- 2.Qxd6#
- 1...Sxb5
- 2.Se4#
- 2.Qf5#
- 1...d3
- 2.Qg1#
- 2.Qxd6#
- 1...Rd8
- 2.Sb7#
- 1...Se4
- 2.Sxe4#
- 2.Qf5#
- 1...Rxf8+!
- threat
- 1.f8R?
- 1...Sxb5
- 2.Se4#
- 1...d3
- 2.Qg1#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Rc8
- 2.Sb7#
- 2.Rxc8#
- 1...Rd8
- 2.Sb7#
- 1...Re8
- 2.Sb7#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sd5
- 2.Se4#
- 1...d5
- 2.Qc6#
- 1...Rxf8+!
- 1...Sxb5
- 1.Ke1?
- Keys
- 1.Qe4!
- threat
- 2.Qc6#
- 1...Sxe4
- 2.Sxe4#
- 1...d5
- 2.Qe7#
- 1...Rc8
- 2.Sb7#
- 1...Sd5
- 2.Qxd5#
- 1...d3
- 2.Qe3#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- R(i);N_GUARD::S(E),XR(i)
- R(i);N_GUARD::S(E)
- R(i);N_GUARD,P_PINP(J)::S(E)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XP(F)::S(B)
- P(c);OGATEB::QAB(H)
- P(f);OGATE::QAR1(H)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);N_GUARD,XP(F)::S(B)
- P(c);OGATEB::QAB(H)
- R(i);N_GUARD::S(E),XR(i)
- R(i);N_GUARD::S(E)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(f);OGATE::QAR1(H)
- Refutation
- R(i);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(F)::S(B)
- R(i);N_GUARD::S(E),XR(i)
- R(i);N_GUARD::S(E)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(f);OGATE::QAR1(H)
- Refutation
- P(c);
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- S(a);N_GUARD,XQ(H)::S(B)
- S(a);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- Q(H);CHECK
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- R(i);N_GUARD::S(E)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- P(f);
- Try
- Q(H);CHECK
- Vars
- P(f);OGATEB,P_SPINP(f)::QAB(H)
- Refutation
- P(g);XQ(H)
- Try
- Q(H);XP(h)
- Vars
- S(a);N_GUARD,XP(F)::S(B)
- R(i);N_GUARD::S(E),XR(i)
- R(i);N_GUARD::S(E)
- R(i);N_GUARD,P_PINP(J)::S(E)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATEB::QAB(H)
- Refutation
- P(f);
- Try
- P(J);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD::S(E)
- Refutation
- R(i);CHECK,N_SPINP(f),XQ(J)
- Try
- P(J);
- Threat
- DUALS(2)
- Refutation
- R(i);CHECK,XS(J)
- Try
- P(J);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD::S(E)
- Refutation
- R(i);CHECK,N_SPINP(f),XB(J)
- Try
- P(J);
- Vars
- S(a);N_GUARD,XP(F)::S(B)
- P(c);OGATEB::QAB(H)
- R(i);N_GUARD::S(E),XR(i)
- R(i);N_GUARD::S(E)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(f);OGATE::QAR1(H)
- Refutation
- R(i);CHECK,XR(J)
- Try
- Actual
- Q(H);
- Threat
- QAR1(H)
- Vars
- S(a);XQ(H)::S(B),XS(a)
- P(f);OGATEB::QAB(H)
- R(i);N_GUARD::S(E)
- S(a);N_GUARD::QAR1(H),XS(a)
- P(c);OGATEB::QAB(H)
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).