MESON Chess Problem Database

Problem Display
PID: 201548 (b6b/B2Qp3/2pq4/8/4P3/RB1kP3/1P3R2/7K w - - 0 1)

Tucker, HJ

1st HM., Australian Columns, 1922

b6b/B2Qp3/2pq4/8/4P3/RB1kP3/1P3R2/7K

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qf5#
  • Tries
    • 1.Ba2+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...Bc3!
    • 1.Bc4+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...Kxc4!
    • 1.Bd5+?
      • 1...Bc3
        • 2.Rxc3#
      • 1...Qxa3!
    • 1.Bf7+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...Bc3!
    • 1.Bg8+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...Bc3!
    • 1.Qxd6+?
      • 1...Kxe4
        • 2.Bc2#
        • 2.Rf4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...exd6!
  • Keys
    • 1.e5!
      • threat
        • 2.Qf5#
      • 1...Qd5+
        • 2.Bxd5#
      • 1...c5+
        • 2.Bd5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Qxd7
        • 2.Bd5#
      • 1...Qd4
        • 2.Qxd4#
      • 1...e6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINQ(c),OGATEB,S_FLIGHT,XP(G)::QAB1(I)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(a);N_SPINQ(c),S_FLIGHT,XP(G)::QAB1(I)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • B(E);CHECK
      • Vars
        • K(a);N_SPINQ(c),S_FLIGHT,XP(G)::QAB1(I)
      • Refutation
        • K(a);N_SPINQ(c),S_FLIGHT,XB(E)
    • Try
      • B(E);CHECK,N_PINQ(c)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(D),XB(f)
      • Refutation
        • Q(c);XR(D)
    • Try
      • B(E);CHECK
      • Vars
        • K(a);N_SPINQ(c),S_FLIGHT,XP(G)::QAB1(I)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • B(E);CHECK
      • Vars
        • K(a);N_SPINQ(c),S_FLIGHT,XP(G)::QAB1(I)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • Q(I);CHECK,XQ(c)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(I),XB(f)
      • Refutation
        • P(d);XQ(I)
  • Actual
    • P(G);
    • Threat
      • QAB(I)
    • Vars
      • Q(c);CHECK,N_GUARD::R(D)+B(E),XQ(c)
      • P(b);CHECK::R(D)+B(E)
      • K(a);N_SPINQ(c),S_FLIGHT::QAB1(I)
      • Q(c);N_GUARD,N_SPINQ(c),XQ(I)::R(D)+B(E)
      • Q(c);OGATE::QAR1(I),XQ(c)
      • P(d);OGATE::QAB(I)
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