MESON Chess Problem Database

Problem Display
PID: 55429 (3R4/1B1Nr1p1/7Q/1RP5/n1pk4/4p3/2P5/2K2N2 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

Pen & Pencil, 1888

3R4/1B1Nr1p1/7Q/1RP5/n1pk4/4p3/2P5/2K2N2

#2

9 + 6

3262 700 Chess Problems 1902

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd7
      • 2.Qxe3#
      • 2.Qxg7#
    • 1...Rf7
      • 2.Qxe3#
    • 1...e2
      • 2.Qd2#
    • 1...c3
      • 2.Rb4#
  • Tries
    • 1.Se5+?
      • 1...Kc3
        • 2.Qxe3#
      • 1...Rd7
        • 2.Qxe3#
      • 1...Kxe5!
    • 1.Sb6+?
      • 1...Kc3
        • 2.Sxa4#
      • 1...Rd7
        • 2.Qxe3#
        • 2.Qxg7#
      • 1...Ke5!
    • 1.Sf8+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Rd7
        • 2.Qxe3#
        • 2.Qxg7#
      • 1...Kc3!
    • 1.Qxg7+?
      • 1...Re5
        • 2.Qxe5#
      • 1...Rxg7!
    • 1.Qf6+?
      • 1...Re5
        • 2.Qxe5#
      • 1...gxf6!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Se2#
      • 1...Kc3
        • 2.Se2#
      • 1...Rxd7
        • 2.Qxg7#
      • 1...Sc3
        • 2.Sf5#
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD::QAB1(F),XP(a)
    • P(a);OGATE::QAR2(F)
    • P(c);OGATEB,SBLOCK::R(D)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(F),XP(a)
        • R(e);P_SPINR(e)::QAB1(F),XP(a)
      • Refutation
        • K(d);S_FLIGHT,XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);S_FLIGHT::S(H),XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(F)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(F);CHECK,XP(f)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(F),XR(e)
      • Refutation
        • R(e);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(F),XR(e)
      • Refutation
        • P(f);XQ(F)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(d);S_FLIGHT::S(B)
      • R(e);N_GUARD,P_SPINR(e),XS(H)::QAB(F),XP(f)
      • S(b);SBLOCK::S(B)
      • P(a);OGATE::QAR2(F)
      • P(c);OGATEB,SBLOCK::R(D)
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