MESON Chess Problem Database

Problem Display
PID: 266710 (5bn1/7b/4Q3/2P2r2/N2kNP2/B1p2P2/1p2K3/n7 w - - 0 1)

Tyunin, Aleksandr Dmitrevich

Zadachi i Etyudi, 2011

5bn1/7b/4Q3/2P2r2/N2kNP2/B1p2P2/1p2K3/n7

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Bxb2#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qc4#
      • 1...Rxf4
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rxc5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb5#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Re5+
        • 2.Qxe5#
      • 1...Rxf4
        • 2.Sb5#
      • 1...Rxc5
        • 2.Bxc5#
      • 1...Bxd6
        • 2.Qe4#
      • 1...b1Q
        • 2.Qc4#
      • 1...b1B
        • 2.Sb5#
        • 2.Qc4#
      • 1...b1R
        • 2.Qc4#
        • 2.Qe4#
      • 1...Rd5
        • 2.Qe3#
      • 1...Rg5
        • 2.Sb5#
        • 2.Qc4#
      • 1...Rh5
        • 2.Sb5#
        • 2.Qc4#
      • 1...Rf6
        • 2.Sb5#
        • 2.Qc4#
        • 2.Qe5#
      • 1...Rf7
        • 2.Sb5#
        • 2.Qc4#
        • 2.Qe5#
      • 1...Sf6
        • 2.Sb5#
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::B(B),XP(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(H)
      • Vars
        • R(e);N_GUARD,XP(F)::QAR1(H)
        • R(e);N_GUARD::QAR1(H),XR(e)
      • Refutation
        • R(e);XP(G)
  • Actual
    • S(E);
    • Threat
      • DUALS(3)
    • Vars
      • R(e);CHECK,N_GUARD::QAB1(H),XR(e)
      • R(e);XP(F)::S(E)
      • R(e);OGATE,XP(G)::B(B),XR(e)
      • B(g);XS(E)::QAR1(H)
      • P(b);::QAR1(H)
      • R(e);SBLOCK::QAB1(H)
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