MESON Chess Problem Database
Problem Display
PID: 71339 (7q/BPRPp3/B1K1P3/3P3n/3N3r/2kN3R/P1ppQ1pb/2rn4 w - - 0 1)
Boros, Sandor
La Settimana Enigmistica, 1934
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Kb5#
- 1...Bg1
- 2.Kb5#
- 1...Sg3
- 2.Kb5#
- 1...Sf4
- 2.Kb5#
- 1...Rf4
- Tries
- 1.Qe4?
- threat
- 2.Se2#
- 2.Sb5#
- 1...Qxd4
- 2.Bxd4#
- 1...g1S
- 2.Sb5#
- 1...Rb1
- 2.Se2#
- 1...Sg3
- 2.Kb5#
- 2.Kb6#
- 2.Sb5#
- 1...Sf4
- 2.Kb5#
- 2.Kb6#
- 2.Sb5#
- 1...Rxe4!
- threat
- 1.Qe5?
- threat
- 2.Kb5#
- 2.Kb6#
- 2.Se2#
- 1...Rxh3
- 2.Kb6#
- 2.Se2#
- 1...Rxd4
- 2.Kb5#
- 2.Kb6#
- 2.Bxd4#
- 1...Bxe5
- 2.Se2#
- 1...Qb8
- 2.Se2#
- 1...Qc8
- 2.Se2#
- 1...Qd8
- 2.Se2#
- 1...Rb1
- 2.Se2#
- 1...Bg3
- 2.Kb6#
- 2.Se2#
- 1...Sb2
- 2.Se2#
- 1...Se3
- 2.Se2#
- 1...Sg3
- 2.Kb6#
- 2.Se2#
- 1...Qxe5!
- threat
- 1.Qe4?
- Keys
- 1.Qg4!
- threat
- 2.Se2#
- 2.Sb5#
- 1...Qxd4
- 2.Bxd4#
- 1...Rxh3
- 2.Se2#
- 1...Rxg4
- 2.Se2#
- 1...g1S
- 2.Sb5#
- 1...Qe5
- 2.Sb5#
- 1...Rb1
- 2.Se2#
- 1...Bg3
- 2.Se2#
- 1...Bf4
- 2.Se2#
- 1...Se3
- 2.Se2#
- 1...Sg3
- 2.Kb6#
- 1...Sf4
- 2.Kb5#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 2
- Sets
- R(h);S_CUTB(f)::R(L)+K(H)
- B(f);N_GUARD::R(L)+K(H)
- S(i);S_CUTB(f)::R(L)+K(H)
- Tries
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(k);OGATE,XS(E)::B(J),XQ(k)
- P(e);::S(E)
- R(a);::S(E)
- Refutation
- R(h);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(f);XQ(B)::S(E)
- Q(k);::QAB(B)+S(E),DCHECK
- Q(k);P_PINR(L)::QAB(B)+S(E),DCHECK
- R(a);::QAB(B)+S(E),DCHECK
- S(b);::QAB(B)+S(E),DCHECK
- Refutation
- Q(k);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(k);OGATE,XS(E)::B(J),XQ(k)
- R(h);XR(D)::S(E)
- R(h);XQ(B)::S(E)
- P(e);::S(E)
- Q(k);::S(E)
- R(a);::S(E)
- B(f);::S(E)
- S(b);::S(E)
- S(i);S_CUTB(f)::R(L)+K(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).