MESON Chess Problem Database

Problem Display
PID: 61931 (5K2/2n2N2/4pR2/2p3B1/4k1n1/1BPN1p1R/3PPb1q/7b w - - 0 1)

Grinblat, Arieh

Hirschenson, Aaron

3rd HM., Eretria Quick Ty., 2005

5K2/2n2N2/4pR2/2p3B1/4k1n1/1BPN1p1R/3PPb1q/7b

#2

10 + 9

5673 Eretria Bulletin 2005
721 Variantim 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sd6#
      • 2.Rf4#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qd6+
      • 2.Sxd6#
    • 1...Qg2
      • 2.Sd6#
      • 2.Rf4#
    • 1...Qxh3
      • 2.Sd6#
      • 2.Rf4#
    • 1...Be1
      • 2.Sxc5#
    • 1...Bg3
      • 2.Sxc5#
    • 1...Bh4
      • 2.Sxc5#
    • 1...Se3
      • 2.Sxc5#
    • 1...Se5
      • 2.Sd6#
    • 1...e5
      • 2.Sd6#
  • Tries
    • 1.Sxf2+?
      • 1...Qxf2
        • 2.Rf4#
        • 2.d3#
      • 1...Sxf2!
    • 1.Sb4?
      • threat
        • 2.Bc2#
        • 2.d3#
      • 1...Sxf6
        • 2.Bc2#
      • 1...cxb4
        • 2.d3#
      • 1...Qf4
        • 2.Bc2#
        • 2.Rxf4#
      • 1...Se3
        • 2.d3#
      • 1...Se5
        • 2.Sd6#
      • 1...c4
        • 2.Bc2#
      • 1...Qd6+!
    • 1.Bf4?
      • threat
        • 2.Sg5#
        • 2.Sd6#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Sxf6
        • 2.Sd6#
      • 1...Bh4
        • 2.Sxc5#
        • 2.Sd6#
      • 1...Sb5
        • 2.Sg5#
      • 1...Se8
        • 2.Sg5#
      • 1...c4!
    • 1.Rxe6+?
      • 1...Kf5
        • 2.e4#
      • 1...Qe5
        • 2.Sd6#
      • 1...Se5
        • 2.Sd6#
      • 1...Sxe6+!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Bc2#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Se3
        • 2.d3#
      • 1...Se5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::R1(H),XQ(c)
    • Q(c);CHECK,N_GUARD::S(I),XQ(c)
    • B(b);N_GUARD::S(E),XP(g)
    • S(f);S_CUTB(b)::S(E),XP(g)
    • S(f);S_CUTQ(c)::S(I)
    • P(h);S_CUTQ(c)::S(I)
  • Tries
    • Try
      • S(E);CHECK,XB(b)
      • Refutation
        • S(f);XS(E)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);XR(H)::B(C)
        • P(g);XS(E)::P(A)
        • S(f);::P(A)
        • S(f);SBLOCK,S_CUTQ(c)::S(I)
        • P(g);::B(C)
      • Refutation
        • Q(c);CHECK
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);OGATE,XB(G)::R1(H),XQ(c)
        • S(f);XR(H)::S(I)
        • S(i);::S(I)
      • Refutation
        • P(g);
    • Try
      • R(H);CHECK,XP(h)
      • Vars
        • K(e);OGATE,S_FLIGHT::P(B)
        • Q(c);P_SPINQ(c)::S(I)
        • S(f);P_SPINS(f)::S(I)
      • Refutation
        • S(i);CHECK,XR(H)
  • Actual
    • S(E);
    • Threat
      • B(C)
    • Vars
      • Q(c);OGATE,XS(E)::R1(H),XQ(c)
      • S(f);SBLOCK::P(A)
      • S(f);SBLOCK::S(I)
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