MESON Chess Problem Database

Problem Display
PID: 147216 (7K/3p2p1/3PPk2/4R1R1/1pp2P2/1pn5/1B2NQN1/8 w - - 0 1)

Kopaev, Viacheslav Georgievich

Canadian Chess Chat, 1983

7K/3p2p1/3PPk2/4R1R1/1pp2P2/1pn5/1B2NQN1/8

#2

10 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Kh7?
      • threat
        • 2.Rgf5#
        • 2.Rg6#
      • 1...g6
        • 2.Rxg6#
      • 1...dxe6!
    • 1.Sh4?
      • threat
        • 2.Rgf5#
        • 2.Rg6#
      • 1...g6
        • 2.Rxg6#
      • 1...dxe6!
    • 1.Qg3?
      • threat
        • 2.Rgf5#
        • 2.Rg6#
      • 1...g6
        • 2.Rxg6#
      • 1...dxe6!
    • 1.Qd4?
      • threat
        • 2.Re3#
        • 2.Re4#
      • 1...Sxe2
        • 2.Rxe2#
      • 1...dxe6
        • 2.Ref5#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sb5!
    • 1.Qh4?
      • threat
        • 2.Rxg7#
      • 1...g6
        • 2.Rgf5#
      • 1...Se4!
  • Keys
    • 1.f5!
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kxg5
        • 2.Qh4#
      • 1...Sxe2
        • 2.Rg6#
      • 1...dxe6
        • 2.fxe6#
      • 1...g6
        • 2.fxg6#
      • 1...Sb1
        • 2.Rg6#
      • 1...Sd1
        • 2.Rg6#
      • 1...Sa2
        • 2.Rg6#
      • 1...Sa4
        • 2.Rg6#
      • 1...Se4
        • 2.Rg6#
      • 1...Sb5
        • 2.Rg6#
      • 1...Sd5
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(J);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::R1(G),XP(g)
      • Refutation
        • P(f);XP(I)
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::R1(G),XP(g)
      • Refutation
        • P(f);XP(I)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::R1(G),XP(g)
      • Refutation
        • P(f);XP(I)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);OGATE,XS(B)::QAB(C)+R(F),XS(b)
        • P(f);SBLOCK,XP(I)::QAB(C)+R(F),DCHECK
        • S(b);::QAB(C)+R(F),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAB(C)+R(G),XP(g)
      • Vars
        • P(g);SBLOCK::QAB(C)+R(G),DCHECK
      • Refutation
        • S(b);
  • Actual
    • P(E);
    • Vars
      • K(e);OGATEB,P_SPINS(b),S_FLIGHT,XR(F)::QAB1(C)
      • K(e);OGATEB,S_FLIGHT,XR(G)::QAB1(C)
      • S(b);XS(B)::R1(G)
      • P(f);OGATE,XP(I)::QAR(C)+P(E),XP(f)
      • P(g);OGATE::QAR(C)+P(E),XP(g)
      • S(b);::R1(G)
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