MESON Chess Problem Database

Problem Display
PID: 208691 (N1K5/2p1b3/2k5/1RPp4/3Q4/n1N5/b7/8 w - - 0 1)

Subotic, Miroslav

Zadachi i Etyudi, 2019

N1K5/2p1b3/2k5/1RPp4/3Q4/n1N5/b7/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxd5#
    • 1...Bxc5
      • 2.Qxc5#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Sc4
      • 2.Qxd5#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Rb6#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Sxb5!
    • 1.Ra5?
      • threat
        • 2.Ra6#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Bc4!
    • 1.Qe5?
      • threat
        • 2.Qxc7#
      • 1...Bd6
        • 2.Qe8#
      • 1...Bd8
        • 2.Qe6#
        • 2.Qe8#
      • 1...Sxb5!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qa6#
      • 1...Bxc5
        • 2.Rb6#
      • 1...Sxb5
        • 2.Qxb5#
      • 1...Sc4
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(B),XP(c)
    • B(f);OGATE,XP(D)::QAR1(B),XB(f)
    • B(f);N_GUARD::QAR(B),XB(f)
    • S(b);S_CUTB(a)::QAB1(B),XP(c)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • R1(C)
      • Vars
        • B(f);OGATE,XP(D)::QAR1(B),XB(f)
        • S(b);S_CUTB(a)::QAB1(B),XP(c)
      • Refutation
        • S(b);XR(C)
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • B(f);OGATE,XP(D)::QAR1(B),XB(f)
        • S(b);S_CUTB(a)::QAB1(B),XP(c)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(e)
      • Vars
        • B(f);OGATE::QAB(B)
      • Refutation
        • S(b);XR(C)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • B(f);SBLOCK,XP(D)::QAB(B)+R(C),DCHECK
      • S(b);OGATE,P_SPINS(b),XR(C)::QAB1(B),XS(b)
      • S(b);N_GUARD::QAB(B)+R(C)
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