MESON Chess Problem Database

Problem Display
PID: 241919 (8/8/8/B7/1p6/8/p1k5/K1N1Q3 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/8/B7/1p6/8/p1k5/K1N1Q3

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qd2#
  • Tries
    • 1.Qd1+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kxd1!
    • 1.Qe2+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kxc1!
    • 1.Qe3?
      • 1...b3
        • 2.Qd2#
      • 1...Kd1!
  • Keys
    • 1.Qxb4!
      • threat
        • 2.Qd2#
      • 1...Kxc1
        • 2.Qd2#
      • 1...Kd1
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
    • Try
      • Q(C);
      • Vars
        • P(c);::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);XP(c)
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT,XS(B)::QAB1(C)
      • K(b);S_FLIGHT::QAR1(C)
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