MESON Chess Problem Database

Problem Display
PID: 152228 (3Q4/2B1p3/r1p5/1b6/pr2k3/bppR3B/8/4K3 w - - 0 1)

Rothstein, Louis

Good Companions (May), 1914

3Q4/2B1p3/r1p5/1b6/pr2k3/bppR3B/8/4K3

#2

5 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxd4#
    • 1...Bc4
      • 2.Qd4#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Bg2#
        • 2.Bf5#
        • 2.Qf5#
      • 1...Rd4
        • 2.Bf5#
        • 2.Qf5#
        • 2.Qxd4#
      • 1...e5
        • 2.Qf5#
      • 1...e6
        • 2.Qh7#
      • 1...Bxd3!
  • Keys
    • 1.Ke2!
      • threat
        • 2.Qxe7#
      • 1...Bxd3+
        • 2.Qxd3#
      • 1...e5
        • 2.Qh4#
      • 1...Rc4
        • 2.Re3#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bc4
        • 2.Qd4#
      • 1...c5
        • 2.Qd5#
      • 1...e6
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAR1(E),XR(e)
    • B(g);S_CUTR(e)::QAR1(E)
    • P(i);N_GUARD::QAB1(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(j);::QAB1(E)
        • P(j);OGATE::QAB(E)
      • Refutation
        • B(g);XR(B)
  • Actual
    • K(A);P-FLIGHT,P_SPINR(B)
    • Threat
      • QAR(E),XP(j)
    • Vars
      • B(g);CHECK,OGATE,XR(B)::QAB1(E),XB(g)
      • P(j);OGATE::QAR(E)
      • R(e);N_PINR(B)::R1(B)
      • R(e);N_GUARD::QAR1(E),XR(e)
      • B(g);S_CUTR(e)::QAR1(E)
      • P(i);N_GUARD::QAB1(E)
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