MESON Chess Problem Database

Problem Display
PID: 169427 (2K5/1pR5/3pkB2/6P1/1Nq2p1N/1Qn5/4p3/8 w - - 0 1)

Hawes, Frederick Thomas

Australasian (The), 1923

2K5/1pR5/3pkB2/6P1/1Nq2p1N/1Qn5/4p3/8

#2

7 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Re7#
    • 1...Qd5
      • 2.Re7#
    • 1...Sb1
      • 2.Qh3#
    • 1...Sd1
      • 2.Qh3#
    • 1...Sa2
      • 2.Qh3#
    • 1...Sa4
      • 2.Qh3#
    • 1...Se4
      • 2.Qh3#
    • 1...Sb5
      • 2.Qh3#
    • 1...Sd5
      • 2.Qh3#
  • Tries
    • 1.Kb8?
      • threat
        • 2.Re7#
      • 1...Sd5
        • 2.Qh3#
      • 1...d5!
    • 1.Kd8?
      • threat
        • 2.Re7#
      • 1...Sd5
        • 2.Qh3#
      • 1...d5!
    • 1.Qxc4+?
      • 1...Sd5
        • 2.Re7#
        • 2.Qxd5#
        • 2.Qe4#
      • 1...d5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sxf4#
      • 1...Qxc7+
        • 2.Sxc7#
      • 1...Kxd5
        • 2.Qxc4#
      • 1...Qxd5
        • 2.Re7#
      • 1...Sxd5
        • 2.Qh3#
      • 1...f3
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_PINR(F),N_SPINQ(c),XQ(A)::R1(F)
    • Q(c);N_PINR(F)::R1(F)
    • S(b);OGATE::QAB(A)
    • S(b);N_SPINQ(c),OGATE::QAB(A)
  • Tries
    • Try
      • K(G);N_SPINR(F),P-FLIGHT
      • Threat
        • R1(F)
      • Vars
        • S(b);N_SPINQ(c),OGATE::QAB(A)
      • Refutation
        • P(e);N_SPINQ(c)
    • Try
      • K(G);N_SPINR(F),P-FLIGHT
      • Threat
        • R1(F)
      • Vars
        • S(b);N_SPINQ(c),OGATE::QAB(A)
      • Refutation
        • P(e);N_SPINQ(c)
    • Try
      • Q(A);CHECK,N_SPINR(F),XQ(c)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • S(B);N_PINQ(c)
    • Threat
      • S(B),XP(d)
    • Vars
      • Q(c);CHECK,XR(F)::QAB(A)+S(B),DCHECK,XQ(c)
      • K(f);OGATEB,P_SPINQ(c),S_FLIGHT,XS(B)::QAB1(A),XQ(c)
      • Q(c);N_PINR(F),P_SPINQ(c),XS(B)::R1(F)
      • S(b);OGATE,SBLOCK,XS(B)::QAB(A)
      • P(d);::S(B)
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