MESON Chess Problem Database

Problem Display
PID: 61926 (B7/2Q5/6K1/3pN3/4k3/1N4P1/2n2P2/2br4 w - - 0 1)

Marandiuk, Mikhail Nazarovich

2nd Prize, Eretria Quick Ty., 2005

B7/2Q5/6K1/3pN3/4k3/1N4P1/2n2P2/2br4

#2

7 + 5

5681 Eretria Quick Ty. 2005
56 The Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sc5#
    • 1...Be3
      • 2.f3#
    • 1...Se3
      • 2.f3#
    • 1...Sd4
      • 2.Sc5#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qh7#
      • 1...Rh1
        • 2.Qxc2#
      • 1...Se3
        • 2.f3#
      • 1...Sd4
        • 2.Sc5#
      • 1...Bg5+!
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Kxe5
        • 2.Qe7#
      • 1...Sd4
        • 2.Qxd5#
      • 1...Se3!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf5#
      • 1...Kxe5
        • 2.Qe7#
      • 1...Se3
        • 2.Qf4#
      • 1...Sd4
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::S(B)
    • B(a);SBLOCK::P(A)
    • S(c);SBLOCK::P(A)
    • S(c);SBLOCK::S(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAB(F)
      • Vars
        • R(b);N_GUARD::QAB(F),XS(c)
        • S(c);SBLOCK::P(A)
        • S(c);SBLOCK::S(B)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(d);N_SPINP(e),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
        • S(c);S_CUTR(b)::QAB1(F),XP(e)
      • Refutation
        • S(c);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(d);N_SPINP(e),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
      • S(c);S_CUTB(a)::QAR1(F)
      • S(c);S_CUTR(b)::QAB1(F),XP(e)
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