MESON Chess Problem Database

Problem Display
PID: 30440 (4K3/8/3pk1pb/1P4n1/3Pp1P1/2N5/4P3/Q2R4 w - - 0 1)

Corrias, Antonio G

Armeeblatt, 1903

4K3/8/3pk1pb/1P4n1/3Pp1P1/2N5/4P3/Q2R4

#2

8 + 6

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qa6#
  • Tries
    • 1.Sa4?
      • threat
        • 2.d5#
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf6
        • 2.d5#
      • 1...d5!
    • 1.Sxe4?
      • threat
        • 2.d5#
      • 1...d5
        • 2.Qa6#
      • 1...Kd5!
    • 1.Qa2+?
      • 1...d5
        • 2.Qa6#
      • 1...Kf6!
    • 1.Qa7?
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Bf8!
    • 1.d5+?
      • 1...Kf6
        • 2.Sb1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Sxe4#
      • 1...Ke5!
  • Keys
    • 1.Sb1!
      • threat
        • 2.d5#
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf6
        • 2.d5#
      • 1...d5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAR(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • P(E)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
        • K(d);P-FLIGHT::QAB(A)+P(E)
      • Refutation
        • P(c);
    • Try
      • S(D);XP(a)
      • Threat
        • P(E)
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c)::QAR(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);P-FLIGHT::QAB1(A)
      • Refutation
        • B(f);
    • Try
      • P(E);CHECK
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • P(E)
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • K(d);P-FLIGHT::QAB(A)+P(E)
      • P(c);OGATEB,SBLOCK::QAR(A)
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