MESON Chess Problem Database

Problem Display
PID: 178040 (2Q5/rpN2b2/3n1R1r/P3p3/P1k5/8/K1N1P3/3R4 w - - 0 1)

Parthasarathy, Dr Mukkur

Busmen's Chess Review, 1964

2Q5/rpN2b2/3n1R1r/P3p3/P1k5/8/K1N1P3/3R4

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3+
      • 2.Sd5#
    • 1...Kc5+
      • 2.Se6#
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sf5
      • 2.Sb5#
      • 2.Sd5#
      • 2.Sa6#
      • 2.Se6#
      • 2.Sa8#
      • 2.Se8#
    • 1...Se8
      • 2.Sxe8#
  • Tries
    • 1.Rd4+?
      • 1...Kc3+
        • 2.Sd5#
      • 1...Kc5+
        • 2.Se6#
      • 1...exd4!
  • Keys
    • 1.Rdxd6!
      • threat
        • 2.Sb5#
        • 2.Sd5#
        • 2.Sa6#
        • 2.Se6#
        • 2.Sa8#
        • 2.Se8#
      • 1...Kc3+
        • 2.Se6#
      • 1...Kc5+
        • 2.Sd5#
      • 1...Rxa5
        • 2.Sb5#
      • 1...Rh8
        • 2.Se8#
      • 1...Ra6
        • 2.Sxa6#
      • 1...Ra8
        • 2.Sxa8#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Be6
        • 2.Sxe6#
      • 1...Be8
        • 2.Sxe8#
      • 1...b5
        • 2.Rc6#
      • 1...b6
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • K(a);CHECK,P-FLIGHT::QAR(I)+S(H),DCHECK
    • S(c);N_GUARD::QAR(I)+S(H),XS(c)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);CHECK,P-FLIGHT::QAR(I)+S(H),DCHECK
      • Refutation
        • P(b);XR(A)
  • Actual
    • R(A);XS(c)
    • Threat
      • DUALS(6)
    • Vars
      • K(a);CHECK,P-FLIGHT::QAR(I)+S(H)
      • R(e);P_PINP(E),XP(F)::QAR(I)+S(H)
      • R(d);::QAR(I)+S(H)
      • R(e);::QAR(I)+S(H),XR(e)
      • B(g);::QAR(I)+S(H),XB(g)
      • P(f);N_GUARD::R(A)
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