MESON Chess Problem Database

Problem Display
PID: 79187 (n1K5/1p1Q4/1p3p2/1P6/R1N1kP2/1p2P2P/1Nr5/1BB5 w - - 0 1)

Reeves, Alfred Christopher

The Tablet, 1963

(First published on Sat Feb 2 1963)

n1K5/1p1Q4/1p3p2/1P6/R1N1kP2/1p2P2P/1Nr5/1BB5

#2

11 + 7

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Se5#
    • 1...f5
      • 2.Qxb7#
  • Tries
    • 1.Bxc2+?
      • 1...bxc2
        • 2.Se5#
      • 1...Kf3!
    • 1.Bd2?
      • 1...Sc7
        • 2.Se5#
      • 1...f5
        • 2.Qxb7#
      • 1...Kf3!
    • 1.Rb4?
      • 1...Sc7
        • 2.Se5#
      • 1...f5
        • 2.Qxb7#
      • 1...Kf3!
    • 1.Rxa8?
      • 1...f5
        • 2.Qxb7#
      • 1...Kf3!
    • 1.Qd1?
      • 1...Sc7
        • 2.Sd6#
      • 1...f5
        • 2.Qh1#
      • 1...Kf5!
    • 1.Qh7+?
      • 1...Kd5
        • 2.Qf5#
      • 1...f5
        • 2.Qxb7#
      • 1...Kf3!
    • 1.h4?
      • 1...Sc7
        • 2.Se5#
      • 1...f5
        • 2.Qxb7#
      • 1...Kf3!
  • Keys
    • 1.Qg4!
      • 1...Kd5
        • 2.Qf5#
      • 1...Sc7
        • 2.Sxb6#
      • 1...f5
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(g);N_PINS(G)::R(F)+S(G)
    • P(e);SBLOCK::QAB(J),XP(f)
  • Tries
    • Try
      • B(A);CHECK,N_SPINS(G),XR(a)
      • Vars
        • P(b);XB(A)::R(F)+S(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • S(g);N_PINS(G)::R(F)+S(G)
        • P(e);SBLOCK::QAB(J),XP(f)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
    • Try
      • R(F);
      • Vars
        • S(g);N_PINS(G)::R(F)+S(G)
        • P(e);SBLOCK::QAB(J),XP(f)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
    • Try
      • R(F);XS(g)
      • Vars
        • P(e);SBLOCK::QAB(J),XP(f)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
    • Try
      • Q(J);
      • Vars
        • S(g);N_PINS(G)::R(F)+S(G),DCHECK
        • P(e);SBLOCK::QAB(J)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • K(c);N_SPINR(a),S_FLIGHT::QAR2(J)
        • P(e);P_SPINP(e),SBLOCK::QAB(J),XP(f)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
    • Try
      • P(E);
      • Vars
        • S(g);N_PINS(G)::R(F)+S(G)
        • P(e);SBLOCK::QAB(J),XP(f)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
  • Actual
    • Q(J);
    • Vars
      • K(c);N_SPINR(a),S_FLIGHT::QAR2(J)
      • S(g);N_PINS(G)::R(F)+S(G),XP(d)
      • P(e);SBLOCK::QAB(J)
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