MESON Chess Problem Database

Problem Display
PID: 227851 (8/3p4/3K4/5p2/3Nk3/8/2PQ4/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/3p4/3K4/5p2/3Nk3/8/2PQ4/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qd3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qf4#
        • 2.Qd3#
      • 1...f4
        • 2.Qxf4#
        • 2.Qd3#
      • 1...Kf3!
    • 1.Sb3?
      • 1...f4
        • 2.Qd3#
      • 1...Kf3!
    • 1.Sf3?
      • threat
        • 2.Sg5#
      • 1...f4
        • 2.Qd3#
      • 1...Kxf3!
    • 1.Sb5?
      • 1...f4
        • 2.Qd3#
      • 1...Kf3!
    • 1.Qc3?
      • 1...f4
        • 2.Qd3#
      • 1...Kf4!
    • 1.Qg5?
      • 1...f4
        • 2.Qe5#
      • 1...Kxd4!
    • 1.Qe2+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kf4!
  • Keys
    • 1.c3!
      • 1...f4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);OGATE::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(A);
    • Vars
      • P(b);SBLOCK::QAR2(B)
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