MESON Chess Problem Database

Problem Display
PID: 222432 (B1R5/3Q4/4p3/2nq4/P7/3k2P1/3P2PN/B2K4 w - - 0 1)

Hindley, R

Australasian (The), 1884

B1R5/3Q4/4p3/2nq4/P7/3k2P1/3P2PN/B2K4

#2

10 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb5#
    • 1...Ke4
      • 2.Qh7#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qd6
      • 2.Qb5#
    • 1...e5
      • 2.Qxd5#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Qb5#
      • 1...exd5
        • 2.Qxd5#
      • 1...Sxd7!
    • 1.Rxc5?
      • 1...Ke4
        • 2.Qh7#
      • 1...Qd4
        • 2.Rc3#
        • 2.Qxd4#
      • 1...Qd6
        • 2.Qb5#
        • 2.Qxd6#
        • 2.Qh7#
      • 1...e5
        • 2.Qxd5#
      • 1...Qxd7!
  • Keys
    • 1.Sg4!
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke4
        • 2.Qh7#
      • 1...Qxd7
        • 2.Se5#
      • 1...Sxa4
        • 2.Sf2#
      • 1...Sxd7
        • 2.Sf2#
      • 1...Qd4
        • 2.Se5#
        • 2.Qxd4#
      • 1...Qd6
        • 2.Se5#
        • 2.Qb5#
      • 1...Sb3
        • 2.Sf2#
      • 1...Se4
        • 2.Se5#
      • 1...Sa6
        • 2.Sf2#
      • 1...Sb7
        • 2.Sf2#
      • 1...e5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • K(a);N_SPINQ(c),P_PINP(C),P_SPINS(b),S_FLIGHT::QAB1(H)
    • K(a);P_PINP(C),S_FLIGHT::QAB(H)
    • Q(c);OGATE::QAR1(H),XQ(c)
    • Q(c);N_GUARD::QAB(H)
    • P(d);N_GUARD::QAR2(H),XQ(c)
  • Tries
    • Try
      • B(I);XQ(c)
      • Threat
        • QAB(H)
      • Vars
        • P(d);OGATE,P_SPINP(d),XB(I)::QAR2(H),XP(d)
      • Refutation
        • S(b);XQ(H)
    • Try
      • R(J);XS(b)
      • Vars
        • K(a);P_PINP(C),S_FLIGHT::QAB(H)
        • P(d);N_GUARD::QAR2(H),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XQ(H)
  • Actual
    • S(E);
    • Vars
      • K(a);N_SPINQ(c),P_PINP(C),P_SPINS(b),S_FLIGHT::QAB1(H)
      • K(a);P_PINP(C),S_FLIGHT::QAB(H)
      • Q(c);N_SPINQ(c),XQ(H)::S(E)
      • S(b);XP(G)::S(E)
      • S(b);N_SPINQ(c),XQ(H)::S(E)
      • S(b);::S(E)
      • S(b);SBLOCK::S(E)
      • P(d);N_GUARD::QAR2(H),XQ(c)
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