MESON Chess Problem Database

Problem Display
PID: 65322 (2b3q1/2PPBkPP/7P/3NR2K/8/8/8/8 w - - 0 1)

Kuzmichev, Vladimir Viktorovich

The Problemist Supplement, 2006

2b3q1/2PPBkPP/7P/3NR2K/8/8/8/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.cxd8S#
    • 1...Qf8
      • 2.gxf8Q#
      • 2.gxf8R#
    • 1...Qh8
      • 2.gxh8S#
  • Tries
    • 1.Ba3?
      • threat
        • 2.Re7#
      • 1...Qxg7
        • 2.d8S#
      • 1...Qd8
        • 2.cxd8S#
      • 1...Qe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Qxh7!
    • 1.Bb4?
      • threat
        • 2.Re7#
      • 1...Qxg7
        • 2.d8S#
      • 1...Qd8
        • 2.cxd8S#
      • 1...Qe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Qxh7!
    • 1.Bc5?
      • threat
        • 2.Re7#
      • 1...Qxg7
        • 2.d8S#
      • 1...Qd8
        • 2.cxd8S#
      • 1...Qe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Qxh7!
    • 1.Bd6?
      • threat
        • 2.Re7#
      • 1...Qxg7
        • 2.d8S#
      • 1...Qd8
        • 2.cxd8S#
      • 1...Qe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Qxh7!
    • 1.d8S+?
      • 1...Ke8
        • 2.Sf6#
      • 1...Qxd8!
  • Keys
    • 1.Sf6!
      • threat
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Qxh7
        • 2.d8S#
      • 1...Qxg7
        • 2.d8S#
      • 1...Bxd7
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Qd8
        • 2.cxd8S#
      • 1...Qe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Qh8
        • 2.gxh8S#
      • 1...Ba6
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Bb7
        • 2.hxg8Q#
        • 2.hxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);OGATE::PXQ(c)=S
    • Q(c);OGATE::PXQ(c)=Q
  • Tries
    • Try
      • B(G);
      • Threat
        • R1(B)
      • Vars
        • Q(c);N_GUARD,XP(H)::P=S
        • Q(c);OGATE::PXQ(c)=S
        • Q(c);OGATE::PXQ(c)=Q
      • Refutation
        • Q(c);P_PINP(D),XP(I)
    • Try
      • B(G);
      • Threat
        • R1(B)
      • Vars
        • Q(c);N_GUARD,XP(H)::P=S
        • Q(c);OGATE::PXQ(c)=S
        • Q(c);OGATE::PXQ(c)=Q
      • Refutation
        • Q(c);P_PINP(D),XP(I)
    • Try
      • B(G);
      • Threat
        • R1(B)
      • Vars
        • Q(c);N_GUARD,XP(H)::P=S
        • Q(c);OGATE::PXQ(c)=S
        • Q(c);OGATE::PXQ(c)=Q
      • Refutation
        • Q(c);P_PINP(D),XP(I)
    • Try
      • B(G);
      • Threat
        • R1(B)
      • Vars
        • Q(c);N_GUARD,XP(H)::P=S
        • Q(c);OGATE::PXQ(c)=S
        • Q(c);OGATE::PXQ(c)=Q
      • Refutation
        • Q(c);P_PINP(D),XP(I)
    • Try
      • P(F);CHECK
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • Q(c);XS(F)
  • Actual
    • S(A);
    • Threat
      • PXQ(c)=Q
    • Vars
      • Q(c);N_GUARD,P_PINP(D),XP(I)::P=S
      • Q(c);N_GUARD,XP(H)::P=S
      • B(b);XP(F)::PXQ(c)=Q
      • Q(c);OGATE::PXQ(c)=S
      • Q(c);OGATE::PXQ(c)=Q
      • B(b);::PXQ(c)=Q
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