MESON Chess Problem Database

Problem Display
PID: 45599 (6Q1/7B/7p/3N3r/pRpk3p/p1NP3K/rn3R1B/8 w - - 0 1)

Cornejo, Jose Jesus

Recomm., BCF 054. Ty., 1946-1947

6Q1/7B/7p/3N3r/pRpk3p/p1NP3K/rn3R1B/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rxc4#
  • Tries
    • 1.Rf4+?
      • 1...Ke5
        • 2.Rfxc4#
        • 2.Re4#
        • 2.Rg4#
        • 2.Rxh4#
      • 1...Kc5!
    • 1.Qe6?
      • threat
        • 2.Qe3#
        • 2.Qb6#
      • 1...Kc5
        • 2.Qb6#
      • 1...Sxd3
        • 2.Qe3#
      • 1...Rf5
        • 2.Qe3#
      • 1...Re5
        • 2.Qb6#
      • 1...Sd1
        • 2.Rxc4#
        • 2.Qb6#
      • 1...Rxd5!
    • 1.Qg7+?
      • 1...Re5
        • 2.Qa7#
      • 1...Kc5!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Rf1#
        • 2.Rfxb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rg2#
        • 2.Rf3#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...Kc5
        • 2.Rf6#
      • 1...Rxd5
        • 2.Rc2#
      • 1...Sxd3
        • 2.Rd2#
      • 1...Rf5
        • 2.Rf3#
      • 1...Ra1
        • 2.Rf1#
      • 1...Re5
        • 2.Rf4#
      • 1...Rg5
        • 2.Rg2#
      • 1...Sd1
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R1(F),XP(e)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • K(f);N_SPINP(e),S_FLIGHT
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);N_SPINP(e),S_FLIGHT::QAB1(I)
        • S(b);XP(D)::QAB1(I)
        • R(h);::QAB1(I)
        • R(h);::QAB(I)
      • Refutation
        • R(h);XS(G)
    • Try
      • Q(I);CHECK
      • Vars
        • R(h);P_SPINR(h)::QAB(I)
      • Refutation
        • K(f);N_SPINP(e),S_FLIGHT
  • Actual
    • Q(I);
    • Threat
      • DUALS(10)
    • Vars
      • K(f);N_SPINP(e),S_FLIGHT::QAB(I)+R(A)
      • R(h);XS(G)::QAB(I)+R(A)
      • S(b);XP(D)::QAB(I)+R(A)
      • R(h);::QAB(I)+R(A)
      • R(a);::QAB(I)+R(A)
      • R(h);SBLOCK::QAB(I)+R(A),DCHECK
      • S(b);N_GUARD::R1(F),XP(e)
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