MESON Chess Problem Database
Problem Display
PID: 283902 (n7/3pB2P/r3b3/1RNPk1n1/2PpB2R/pK1PN1Pp/2P2r2/4Qq2 w - - 0 1)
Dyachuk, Vasyl Vasilovich
1st HM., FIDE World Cup in Composing 12. Ty., 2025
#2
14 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxd3+
- 2.Sxd3#
- 1...Rf5
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...Bxd5
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 2.Sxd7#
- 1...Bg8
- 2.Sg4#
- 2.Sxd7#
- 1...Sf3
- 2.h8Q#
- 2.h8B#
- 1...Sxe4
- 2.Rxe4#
- 1...dxe3
- 2.Qc3#
- 1...Qxd3+
- Tries
- 1.Bf5?
- threat
- 2.h8Q#
- 2.h8B#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qxe1
- 2.h8Q#
- 2.h8B#
- 1...Rxc2
- 2.h8Q#
- 2.h8B#
- 1...Rxf5
- 2.Sg4#
- 1...Bxd5
- 2.Sxd7#
- 1...Bxf5
- 2.Sg4#
- 1...Sxh7
- 2.Re4#
- 1...Qe2
- 2.h8Q#
- 2.h8B#
- 1...Qg2
- 2.h8Q#
- 2.h8B#
- 1...Qg1
- 2.h8Q#
- 2.h8B#
- 1...Qh1
- 2.h8Q#
- 2.h8B#
- 1...Rd2
- 2.h8Q#
- 2.h8B#
- 1...Re2
- 2.h8Q#
- 2.h8B#
- 1...Rg2
- 2.h8Q#
- 2.h8B#
- 1...Rh2
- 2.h8Q#
- 2.h8B#
- 1...Rf3
- 2.h8Q#
- 2.h8B#
- 1...Rf4
- 2.h8Q#
- 2.h8B#
- 1...Ra4
- 2.h8Q#
- 2.h8B#
- 1...Ra5
- 2.h8Q#
- 2.h8B#
- 1...Rb6
- 2.h8Q#
- 2.h8B#
- 1...Rc6
- 2.h8Q#
- 2.h8B#
- 1...Rd6
- 2.h8Q#
- 2.h8B#
- 1...Ra7
- 2.h8Q#
- 2.h8B#
- 1...Bf7
- 2.Sxd7#
- 1...Bg8
- 2.Sxd7#
- 1...Sf3
- 2.Re4#
- 2.h8Q#
- 2.h8B#
- 1...Se4
- 2.Rxe4#
- 1...Sf7
- 2.Re4#
- 1...Sb6
- 2.h8Q#
- 2.h8B#
- 1...Sc7
- 2.h8Q#
- 2.h8B#
- 1...a2
- 2.h8Q#
- 2.h8B#
- 1...h2
- 2.h8Q#
- 2.h8B#
- 1...d6
- 2.h8Q#
- 2.h8B#
- 1...dxe3!
- threat
- 1.Bf5?
- Keys
- 1.d6!
- threat
- 2.Sxd7#
- 1...Qxd3+
- 2.Sxd3#
- 1...Bxc4+
- 2.Sxc4#
- 1...dxe3
- 2.Qc3#
- 1...Bg4
- 2.Sxg4#
- 1...Bd5
- 2.Sg4#
- 1...Bf5
- 2.h8Q#
- 2.h8B#
- 1...Bf7
- 2.Sg4#
- 1...Bg8
- 2.Sg4#
- threat
- 1.d6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(a);CHECK,XP(D)::S(K),XQ(a)
- R(b);S_CUTB(i)::S(E)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD,P_PINP(G),XP(L)::S(E)
- S(g);S_CUTR(b)::P=Q
- S(g);OGATE,XB(H)::R1(I),XS(g)
- P(e);OGATEB,XS(E)::QAB(A)
- Tries
- Try
- B(H);
- Threat
- P=Q
- Vars
- Q(a);CHECK,XP(D)::S(K),XQ(a)
- Q(a);XQ(A)::P=Q
- R(b);XP(B)::P=Q
- R(b);SBLOCK,XB(H)::QAR(A)+S(E),DCHECK
- B(i);N_GUARD,P_PINP(G),XP(L)::S(K),XP(j)
- B(i);SBLOCK,XB(H)::QAR(A)+S(E),DCHECK
- S(g);N_GUARD,XP(N)::R1(I)
- Q(a);::P=Q
- R(b);::P=Q
- R(h);::P=Q
- R(h);P_PINR(J)::P=Q
- B(i);N_GUARD::S(K),XP(j)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- S(k);::P=Q
- P(c);::P=Q
- P(d);::P=Q
- P(j);::P=Q
- Refutation
- P(e);P_SPINP(e),XS(E)
- Try
- Actual
- P(L);P_SPINP(G)
- Threat
- R(J)+S(K),DCHECK,XP(j)
- Vars
- Q(a);CHECK,XP(D)::R(J)+S(K),DCHECK,XQ(a)
- B(i);CHECK,XP(G)::S(E),XB(i)
- P(e);OGATEB,XS(E)::QAB(A)
- B(i);N_GUARD,N_PINP(G)::S(E),XB(i)
- B(i);N_GUARD::S(E)
- B(i);N_PINP(G),S_CUTR(b)::P=Q
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).