MESON Chess Problem Database

Problem Display
PID: 105426 (8/2Q5/1PN1p3/2n5/p2P4/P1kBb3/K2R4/2B5 w - - 0 1)

Erokhin, Vladimir Alekseevich

Szachy, 1980

8/2Q5/1PN1p3/2n5/p2P4/P1kBb3/K2R4/2B5

#2

9 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se5?
      • threat
        • 2.Qxc5#
      • 1...Bxd4
        • 2.Rc2#
      • 1...Kxd4!
    • 1.Qh2?
      • threat
        • 2.Bb2#
      • 1...Bxd2
        • 2.Qxd2#
      • 1...Sxd3
        • 2.Rc2#
      • 1...Bf2!
    • 1.Qh7?
      • threat
        • 2.Rc2#
      • 1...Bxd2
        • 2.Bb2#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Se4!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Bb2#
      • 1...Bxd4
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);P_PINS(d)
      • Threat
        • QAR2(I),XS(d)
      • Vars
        • B(b);SBLOCK,XP(F)::R1(C)
      • Refutation
        • K(a);N_SPINS(d),S_FLIGHT,XP(F)
    • Try
      • Q(I);
      • Threat
        • B(A)
      • Vars
        • B(b);OGATE,XR(C)::QAB1(I),XB(b)
        • S(d);SBLOCK,XB(E)::R1(C)
      • Refutation
        • B(b);
    • Try
      • Q(I);
      • Threat
        • R1(C)
      • Vars
        • B(b);SBLOCK,XR(C)::B(A)
        • S(d);OGATE,XB(E)::QAR1(I),XS(d)
      • Refutation
        • S(d);
  • Actual
    • S(H);P_PINS(d)
    • Threat
      • QAR2(I),XS(d)
    • Vars
      • K(a);N_SPINS(d),S_FLIGHT,XP(F)::B(A)
      • B(b);SBLOCK,XP(F)::R1(C)
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