MESON Chess Problem Database

Problem Display
PID: 76540 (8/8/8/8/6Q1/6NK/5pp1/6k1 w - - 0 1)

Cafferata, Louis William

The Tablet, 1935

(First published on Sat Feb 2 1935)

8/8/8/8/6Q1/6NK/5pp1/6k1

#2

3 + 3

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...f1B
      • 2.Qd4#
  • Tries
    • 1.Se2+?
      • 1...Kh1
        • 2.Qxg2#
      • 1...Kf1!
    • 1.Qe2?
      • 1...f1S
        • 2.Qxg2#
      • 1...f1B
        • 2.Qe3#
      • 1...f1R
        • 2.Qxg2#
      • 1...f1Q!
    • 1.Qf3?
      • threat
        • 2.Qxg2#
      • 1...f1B
        • 2.Qe3#
      • 1...f1Q!
    • 1.Qe4?
      • threat
        • 2.Qxg2#
      • 1...f1B
        • 2.Qe3#
        • 2.Qd4#
      • 1...f1Q!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Qxg2#
      • 1...Kxf1
        • 2.Qd1#
      • 1...Kh1
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::QAB(C)
  • Tries
    • Try
      • S(A);CHECK,P_PINP(c)
      • Vars
        • K(a);N_SPINP(c),P-FLIGHT::QAB1(C),XP(c)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);OGATE::QAR1(C),XP(c)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • P(b);OGATEB::QAB(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(c)
      • Refutation
        • P(b);
  • Actual
    • S(A);P_PINP(c)
    • Threat
      • QAR1(C),XP(c)
    • Vars
      • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XS(A)::QAR2(C)
      • K(a);N_SPINP(c),P-FLIGHT::QAB1(C),XP(c)
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