MESON Chess Problem Database

Problem Display
PID: 142593 (5B2/7Q/B1pbk1p1/4n3/2PprRp1/8/2N1R3/3K4 w - - 0 1)

Popa, Nicolae

Phenix, 1990

5B2/7Q/B1pbk1p1/4n3/2PprRp1/8/2N1R3/3K4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxd4#
    • 1...Re3
      • 2.Sxd4#
    • 1...Bc7
      • 2.Qe7#
    • 1...Be7
      • 2.Qxe7#
    • 1...Bb8
      • 2.Qe7#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Rexe4?
      • threat
        • 2.Sxd4#
        • 2.Bc8#
        • 2.Qf7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bc5
        • 2.Bc8#
        • 2.Qf7#
      • 1...d3
        • 2.Sd4#
        • 2.Bc8#
        • 2.Qf7#
      • 1...c5
        • 2.Bc8#
        • 2.Qf7#
      • 1...Bxf8!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Rf6#
      • 1...Rxf4
        • 2.Bc8#
      • 1...Sxc4
        • 2.Bxc4#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sf7
        • 2.Bc8#
      • 1...Sd3
        • 2.Sxd4#
        • 2.Bc8#
      • 1...Sf3
        • 2.Bc8#
      • 1...Sd7
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,XR(C)::S(B),XP(a)
    • R(b);N_GUARD::S(B),XP(a)
    • B(f);N_GUARD::QAR1(G)
    • B(f);N_GUARD::QAR1(G),XB(f)
    • P(h);OGATE::QAB1(G)
  • Tries
    • Try
      • R(C);P_PINS(d),XR(b)
      • Threat
        • DUALS(3)
      • Vars
        • B(f);N_GUARD::QAR1(G),XB(f)
      • Refutation
        • B(f);XB(H)
  • Actual
    • Q(G);
    • Threat
      • R1(E)
    • Vars
      • R(b);P_SPINS(d),XR(E)::B(F)
      • S(d);OGATE,P_SPINR(b),XP(D)::B(F),XS(d)
      • B(f);N_GUARD::QAR1(G),XB(f)
      • S(d);N_GUARD,P_SPINR(b)::B(F)
      • S(d);P_SPINR(b)::S(B),XP(a)
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