MESON Chess Problem Database

Problem Display
PID: 86923 (2B5/4PP2/2pBKN2/5RP1/7p/5pPk/5p1b/6nQ w - - 0 1)

Storozhenko, Ivan Ivanovich

Uralski Problemist, 2001

2B5/4PP2/2pBKN2/5RP1/7p/5pPk/5p1b/6nQ

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qf1#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Rxf3#
      • 1...hxg3
        • 2.Rf4#
      • 1...Kxg3!
    • 1.Ba6?
      • threat
        • 2.Bf1#
      • 1...f1Q
        • 2.Bxf1#
      • 1...f1S
        • 2.Bxf1#
      • 1...f1B
        • 2.Bxf1#
      • 1...f1R
        • 2.Bxf1#
      • 1...Se2
        • 2.Qf1#
      • 1...hxg3!
    • 1.Rxf3?
      • threat
        • 2.Ke5#
      • 1...Sxf3
        • 2.Qf1#
      • 1...hxg3!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Rxh4#
      • 1...Kxg3
        • 2.Rxf3#
      • 1...hxg3
        • 2.Ke5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::QAB(A)
  • Tries
    • Try
      • K(F);P-FLIGHT,P_SPINP(B)
      • Threat
        • B(J)+R(C),XP(d)
      • Vars
        • P(f);SBLOCK,XP(B)::B(J)+R(C)
      • Refutation
        • K(e);N_SPINB(c),P-FLIGHT,XP(B)
    • Try
      • B(J);
      • Threat
        • B(J)
      • Vars
        • P(b);::B(J),XQ(b)
        • P(b);::B(J),XS(b)
        • P(b);::B(J),XB(b)
        • P(b);::B(J),XR(b)
        • S(a);OGATE::QAB(A)
      • Refutation
        • P(f);XP(B)
    • Try
      • R(C);XP(d)
      • Threat
        • B(J)+K(F)
      • Vars
        • S(a);OGATE,XR(C)::QAB(A)
      • Refutation
        • P(f);P_SPINP(f),XP(B)
  • Actual
    • R(C);
    • Threat
      • R1(C),XP(f)
    • Vars
      • K(e);N_SPINB(c),OGATEB,P-FLIGHT,XP(B)::B(E)+R(C),DCHECK,XP(d)
      • P(f);SBLOCK,XP(B)::B(J)+K(F)
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