MESON Chess Problem Database
Problem Display
PID: 81763 (B6n/4p1K1/3P4/2P1kp2/RNn1PN2/1p1R4/7Q/b5Bb w - - 0 1)
Murashev, Pavel Aleksandrovich
Problem Observer, 2009
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Bxd4#
- 1...Sb2
- 2.Sc6#
- 2.Bd4#
- 1...Sd2
- 2.Sc6#
- 1...Sa3
- 2.Sc6#
- 1...Se3
- 2.Sc6#
- 1...Sb6
- 2.Sc6#
- 1...Sxd6
- 2.Sc6#
- 1...b2
- 2.Bd4#
- 1...fxe4
- 2.Rd5#
- 1...e6
- 2.Sg6#
- 1...Bd4
- Tries
- 1.Bd5?
- threat
- 2.Sc6#
- 2.Sg6#
- 1...Sa5
- 2.Sg6#
- 1...Sg6
- 2.Sc6#
- 2.Sxg6#
- 1...fxe4!
- threat
- 1.Rd1?
- threat
- 2.Sbd3#
- 1...fxe4
- 2.Rd5#
- 1...Sb2
- 2.Sc6#
- 2.Bd4#
- 1...Bxe4!
- threat
- 1.Rd2?
- threat
- 2.Sbd3#
- 1...fxe4
- 2.Rd5#
- 1...Sb2
- 2.Sc6#
- 2.Bd4#
- 1...Bxe4!
- threat
- 1.Re3?
- threat
- 2.Sc6#
- 1...Kd4
- 2.Se6#
- 1...Sa5
- 2.Sbd3#
- 1...fxe4!
- threat
- 1.Rh3?
- threat
- 2.Sbd3#
- 1...fxe4
- 2.Rh5#
- 1...Sb2
- 2.Sc6#
- 1...Bxe4!
- threat
- 1.Rd4?
- threat
- 2.Sbd3#
- 2.Sc6#
- 1...Bxd4
- 2.Sbd3#
- 1...fxe4
- 2.Rd5#
- 1...Sb2
- 2.Sc6#
- 1...Sa5
- 2.Sbd3#
- 1...Bxe4!
- threat
- 1.Rxa1?
- threat
- 2.Bd4#
- 1...fxe4
- 2.Rd5#
- 1...Se3!
- threat
- 1.Ra7?
- threat
- 2.Rxe7#
- 1...fxe4
- 2.Rd5#
- 1...exd6
- 2.Re7#
- 1...e6
- 2.Sg6#
- 1...Sg6!
- threat
- 1.dxe7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Bxe4
- 2.e8Q#
- 2.e8R#
- 1...fxe4
- 2.Rd5#
- 1...Bb2
- 2.e8Q#
- 2.e8R#
- 1...Bc3
- 2.e8Q#
- 2.e8R#
- 1...Bd4
- 2.Bxd4#
- 2.e8Q#
- 2.e8R#
- 1...Bg2
- 2.e8Q#
- 2.e8R#
- 1...Bf3
- 2.e8Q#
- 2.e8R#
- 1...Sb2
- 2.Sc6#
- 2.Bd4#
- 2.e8Q#
- 2.e8R#
- 1...Sd2
- 2.Sc6#
- 2.e8Q#
- 2.e8R#
- 1...Sa3
- 2.Sc6#
- 2.e8Q#
- 2.e8R#
- 1...Se3
- 2.Sc6#
- 2.e8Q#
- 2.e8R#
- 1...Sa5
- 2.e8Q#
- 2.e8R#
- 1...Sb6
- 2.Sc6#
- 2.e8Q#
- 2.e8R#
- 1...Sd6
- 2.Sc6#
- 1...Sf7
- 2.e8Q#
- 2.e8R#
- 1...b2
- 2.Bd4#
- 2.e8Q#
- 2.e8R#
- 1...Sg6!
- threat
- 1.Bd5?
- Keys
- 1.Rf3!
- threat
- 2.Sbd3#
- 1...fxe4
- 2.Qh5#
- 1...Sb2
- 2.Sc6#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- B(a);N_GUARD::B(A),XB(a)
- S(d);::S(E)
- S(d);XP(I)::S(E)
- P(c);S_CUTB(a)::B(A)
- P(f);SBLOCK,XP(F)::R1(C)
- P(g);SBLOCK::QAB(B)+S(G),DCHECK
- Tries
- Try
- B(K);
- Threat
- DUALS(2)
- Vars
- S(d);::QAB(B)+S(G),DCHECK
- Refutation
- P(f);XP(F)
- Try
- R(C);
- Threat
- S(E)
- Vars
- P(f);SBLOCK,XP(F)::R1(C)
- Refutation
- B(b);XP(F)
- Try
- R(C);
- Threat
- S(E)
- Vars
- P(f);SBLOCK,XP(F)::R1(C)
- Refutation
- B(b);XP(F)
- Try
- R(C);
- Threat
- S(E)
- Vars
- K(e);S_FLIGHT::S(G)
- S(d);::S(E)
- Refutation
- P(f);P_SPINP(f),XP(F)
- Try
- R(C);
- Threat
- S(E)
- Vars
- P(f);OGATEB,XP(F)::R(C)
- S(d);::S(E)
- Refutation
- B(b);XP(F)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);XR(C)::S(E)
- P(f);SBLOCK,XP(F)::R1(C)
- S(d);::S(E)
- Refutation
- B(b);XP(F)
- Try
- R(D);XB(a)
- Threat
- B(A)
- Vars
- P(f);SBLOCK,XP(F)::R1(C)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- R(D),XP(g)
- Vars
- P(f);SBLOCK,XP(F)::R1(C)
- P(g);XP(I)::R(D)
- P(g);SBLOCK::QAB(B)+S(G),DCHECK
- Refutation
- S(h);
- Try
- P(I);XP(g)
- Threat
- P=Q
- Vars
- B(b);XP(F)::P=Q
- P(f);SBLOCK,XP(F)::R1(C)
- B(a);::P=Q
- B(b);::P=Q
- S(d);::P=Q
- S(d);::S(E)
- S(h);::P=Q
- Refutation
- S(h);
- Try
- Actual
- R(C);
- Threat
- S(E)
- Vars
- P(f);OGATEB,XP(F)::QAR(B)
- S(d);::S(E)
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).