MESON Chess Problem Database

Problem Display
PID: 179574 (N7/N6B/3pp1n1/2pk1p2/5p2/2P2P2/1K2P3/Q1R5 w - - 0 1)

Anonymous

British Chess Magazine 15. (Healey MT) Ty., 1909-1910

N7/N6B/3pp1n1/2pk1p2/5p2/2P2P2/1K2P3/Q1R5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
      • 2.Qa2#
    • 1...Se5
      • 2.Sb6#
    • 1...c4
      • 2.Qa5#
    • 1...e5
      • 2.Bg8#
  • Tries
    • 1.Ka2?
      • threat
        • 2.c4#
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke5
        • 2.c4#
      • 1...Se5
        • 2.Sb6#
      • 1...e5
        • 2.Bg8#
      • 1...c4!
    • 1.Ka3?
      • threat
        • 2.c4#
      • 1...Kc4
        • 2.Sb6#
        • 2.Qa2#
      • 1...Ke5
        • 2.c4#
      • 1...Se5
        • 2.Sb6#
      • 1...e5
        • 2.Bg8#
      • 1...c4!
    • 1.Kb3?
      • threat
        • 2.c4#
      • 1...Ke5
        • 2.c4#
      • 1...Se5
        • 2.Sb6#
        • 2.Sc7#
      • 1...e5
        • 2.Sc7#
        • 2.Bg8#
      • 1...c4+!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Qa2#
        • 2.Qa4#
        • 2.Qa6#
      • 1...Ke5!
    • 1.Bxg6?
      • 1...Kc4
        • 2.Sb6#
        • 2.Qa2#
      • 1...c4
        • 2.Qa5#
      • 1...e5
        • 2.Bf7#
      • 1...Ke5!
    • 1.Rd1+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Qa2#
        • 2.Qa4#
        • 2.Qa6#
      • 1...Ke5!
    • 1.Qa2+?
      • 1...c4
        • 2.Qa5#
      • 1...Ke5!
    • 1.c4+?
      • 1...Ke5
        • 2.Kb1#
        • 2.Ka2#
        • 2.Kc2#
        • 2.Ka3#
        • 2.Kb3#
      • 1...Kd4!
  • Keys
    • 1.Kb1!
      • threat
        • 2.c4#
      • 1...Kc4
        • 2.Qa2#
      • 1...Ke5
        • 2.c4#
      • 1...Se5
        • 2.Sb6#
      • 1...c4
        • 2.Qa5#
      • 1...e5
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);SBLOCK::S(I)
    • P(b);OGATEB,SBLOCK::QAR(A)
    • P(f);OGATEB,SBLOCK::B(H)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • P(E)
      • Vars
        • K(c);S_FLIGHT::S(I)
        • K(c);P-FLIGHT::QAB(A)+P(E)
        • S(g);SBLOCK::S(I)
        • P(f);OGATEB,SBLOCK::B(H)
      • Refutation
        • P(b);
    • Try
      • K(C);S_FLIGHT
      • Threat
        • P(E)
      • Vars
        • K(c);P-FLIGHT::QAB(A)+P(E)
        • S(g);SBLOCK::S(I)
        • P(f);OGATEB,SBLOCK::B(H)
      • Refutation
        • P(b);
    • Try
      • K(C);P-FLIGHT
      • Threat
        • P(E)
      • Vars
        • K(c);P-FLIGHT::QAB(A)+P(E)
      • Refutation
        • P(b);CHECK
    • Try
      • S(I);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(H);XS(g)
      • Vars
        • P(b);OGATEB,SBLOCK::QAR(A)
        • P(f);OGATEB,SBLOCK::B(H)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);OGATEB,P_SPINP(b),SBLOCK::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(E);CHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • P(E)
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • K(c);P-FLIGHT::QAB(A)+P(E)
      • S(g);SBLOCK::S(I)
      • P(b);OGATEB,SBLOCK::QAR(A)
      • P(f);OGATEB,SBLOCK::B(H)
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