MESON Chess Problem Database

Problem Display
PID: 239826 (b5B1/5Q2/pP6/K1k2p2/1Rp2qN1/8/1B1p4/6b1 w - - 0 1)

Groeneveld, Cornelis

Themes-64, 1984

b5B1/5Q2/pP6/K1k2p2/1Rp2qN1/8/1B1p4/6b1

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qd5#
    • 1...Kd6
      • 2.Qc7#
    • 1...Qd6
      • 2.Rxc4#
      • 2.Qxc4#
    • 1...Bd5
      • 2.Qxd5#
  • Tries
    • 1.Rxc4+?
      • 1...Kd6
        • 2.Qe6#
        • 2.Qc7#
      • 1...Qxc4!
    • 1.Rb5+?
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd6
        • 2.Qe6#
        • 2.Qc7#
      • 1...axb5!
    • 1.Qxc4+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Qxc4!
    • 1.Qe7+?
      • 1...Qd6
        • 2.Rxc4#
      • 1...Kc6!
    • 1.Qf8+?
      • 1...Qd6
        • 2.Rxc4#
      • 1...Kc6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Rxc4#
      • 1...Kd4
        • 2.Qxc4#
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Bd5
        • 2.Qxd5#
      • 1...c3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::QAB1(F)
    • K(e);S_FLIGHT::QAB1(F)
    • B(h);N_GUARD::QAR1(F),XB(h)
  • Tries
    • Try
      • R(B);CHECK,XP(c)
      • Refutation
        • Q(d);XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB1(F)
      • Refutation
        • P(g);XR(B)
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • K(e);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • Q(d);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • Q(d);P_SPINQ(d)::R1(B),XP(c)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • Q(d);P_SPINQ(d)::R1(B),XP(c)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • B(A)+R(B),DCHECK,XP(c)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::QAR1(F),XP(c)
      • K(e);P-FLIGHT::QAB1(F)
      • K(e);S_FLIGHT::QAB1(F)
      • B(h);N_GUARD::QAR1(F),XB(h)
      • P(c);::B(A)+R(B),DCHECK
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