MESON Chess Problem Database

Problem Display
PID: 87769 (r3k3/1p2pRpp/N3r3/b2pN3/1Q4B1/p3B2b/1P1PP1P1/4K2R w - - 0 1)

Saunders, Denis M

The Problemist, 1992

r3k3/1p2pRpp/N3r3/b2pN3/1Q4B1/p3B2b/1P1PP1P1/4K2R

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Rf8#
    • 1...Rexa6
      • 2.Qxe7#
    • 1...Rb6
      • 2.Qxe7#
    • 1...Rc6
      • 2.Qxe7#
    • 1...Rf6
      • 2.Qxe7#
    • 1...Rg6
      • 2.Qxe7#
    • 1...Rh6
      • 2.Qxe7#
  • Tries
    • 1.Bxe6?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rf8#
        • 2.Qxe7#
      • 1...Bd8
        • 2.Qb5#
      • 1...Bxb4!
    • 1.Qb5+?
      • 1...Kd8
        • 2.Rf8#
        • 2.Qd7#
      • 1...Rc6!
  • Keys
    • 1.Rhf1!
      • threat
        • 2.Rf8#
      • 1...Kd8
        • 2.Rf8#
      • 1...Rf6
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • K(k);P-FLIGHT::R(L)
    • R(e);N_GUARD,XS(K)::QAR1(H),XP(g)
    • R(e);N_GUARD::QAR1(H),XP(g)
  • Tries
    • Try
      • B(I);XR(e)
      • Threat
        • QAR1(H),XP(g)
      • Vars
        • B(c);SBLOCK::QAB(H)
      • Refutation
        • B(c);P_PINP(D),XQ(H)
    • Try
      • Q(H);CHECK,P_SPINP(D)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • R(B);
    • Threat
      • R1(L)
    • Vars
      • K(k);P-FLIGHT::R(L)
      • R(e);N_GUARD::QAR1(H),XP(g)
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