MESON Chess Problem Database

Problem Display
PID: 21962 (6NQ/6pb/6k1/5R2/2p1P3/2K5/8/8 w - - 0 1)

Jakab, Arpad

Magyar Sakkvilag, 1922

6NQ/6pb/6k1/5R2/2p1P3/2K5/8/8

#2

5 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg8
      • 2.Qh5#
  • Tries
    • 1.Kb2?
      • 1...Bxg8
        • 2.Qh5#
      • 1...c3+!
    • 1.Kc2?
      • 1...Bxg8
        • 2.Qh5#
      • 1...c3!
    • 1.Kd2?
      • 1...Bxg8
        • 2.Qh5#
      • 1...c3+!
    • 1.Kb4?
      • 1...Bxg8
        • 2.Qh5#
      • 1...c3!
    • 1.Kd4?
      • 1...Bxg8
        • 2.Qh5#
      • 1...c3!
    • 1.e5?
      • 1...Bxg8
        • 2.Qh5#
      • 1...Kxf5!
  • Keys
    • 1.Sf6!
      • 1...Kh6
        • 2.Qxh7#
      • 1...Kf7
        • 2.Qe8#
      • 1...gxf6
        • 2.Qxf6#
      • 1...Bg8
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);OGATE,XS(D)::QAB1(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • P(a);
    • Try
      • P(B);
      • Vars
        • B(d);OGATE,XS(D)::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • S(D);
    • Vars
      • K(b);P-FLIGHT,P_SPINB(d)::QAR1(E),XB(d)
      • K(b);S_FLIGHT::QAB1(E)
      • P(c);OGATE,XS(D)::QAR1(E),XP(c)
      • B(d);OGATE::QAB1(E)
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