MESON Chess Problem Database

Problem Display
PID: 143054 (4R3/5N2/4N3/3pp1K1/5Bp1/R1b2kp1/4rp2/1b3Q2 w - - 0 1)

Harley, Brian

Social Chess Quarterly (The), 1934

4R3/5N2/4N3/3pp1K1/5Bp1/R1b2kp1/4rp2/1b3Q2

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxe2#
    • 1...Be4
      • 2.Sxe5#
    • 1...exf4
      • 2.Sd4#
    • 1...e4
      • 2.Sd4#
      • 2.Se5#
  • Tries
    • 1.Kh4?
      • threat
        • 2.Sfg5#
      • 1...exf4
        • 2.Sd4#
        • 2.Seg5#
      • 1...Ke4!
    • 1.Kh6?
      • threat
        • 2.Sfg5#
      • 1...exf4
        • 2.Sd4#
        • 2.Seg5#
      • 1...Ke4!
    • 1.Sxe5+?
      • 1...Ke4
        • 2.Qxe2#
        • 2.Qg2#
      • 1...Rxe5+!
    • 1.Rxc3+?
      • 1...Ke4
        • 2.Sd6#
        • 2.Qxe2#
        • 2.Qg2#
      • 1...Re3
        • 2.Rxe3#
      • 1...Bd3!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Sfg5#
      • 1...exf4+
        • 2.Sd4#
      • 1...e4+
        • 2.Se5#
      • 1...Ke4
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINB(d),N_SPINP(c),S_FLIGHT::QAR2(A),XR(b)
    • B(a);SBLOCK,S_CUTR(b)::S(F),XP(i)
    • P(i);N_GUARD,XB(C)::S(E)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • S(F)
      • Refutation
        • K(e);N_SPINB(d),N_SPINP(c),S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Threat
        • S(F)
      • Refutation
        • K(e);N_SPINB(d),N_SPINP(c),S_FLIGHT
    • Try
      • S(F);CHECK,XP(i)
      • Refutation
        • R(b);CHECK,XS(F)
    • Try
      • R(B);CHECK,XB(d)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::R1(B),XR(b)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • S(F)
    • Vars
      • P(i);CHECK,N_GUARD,SBLOCK,XB(C)::S(E)
      • P(i);CHECK,SBLOCK,S_CUTR(b)::S(F)
      • K(e);N_SPINB(d),N_SPINP(c),S_FLIGHT::QAR2(A),XR(b)
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