MESON Chess Problem Database

Problem Display
PID: 143010 (2n5/3N4/1R1Pr3/K3Pbb1/R1N1k3/P5Q1/1PpPp1P1/r1q5 w - - 0 1)

Hallam, LC

The Referee, 1926

(First published on Sun Dec 5 1926)

2n5/3N4/1R1Pr3/K3Pbb1/R1N1k3/P5Q1/1PpPp1P1/r1q5

#2

12 + 9

14868 Pirnie Collection 2011
15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb6
      • 2.Scxb6#
  • Tries
    • 1.Qd3+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kxd3!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Se3#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Rxe5+
        • 2.Scxe5#
      • 1...Bxd2+
        • 2.Sxd2#
      • 1...Kd4
        • 2.Se3#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd5
        • 2.Se3#
      • 1...Qxb2
        • 2.Sxb2#
      • 1...Rxa3
        • 2.Sxa3#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...Sxb6
        • 2.Scxb6#
      • 1...Sxd6
        • 2.Sxd6#
      • 1...Be3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(i);XR(J)::R(F)+S(G),XS(i)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • R(F)+S(G)
    • Vars
      • Q(b);CHECK,XP(B)::R(F)+S(G),DCHECK,XQ(b)
      • R(h);CHECK,XP(I)::R(F)+S(G),XR(h)
      • B(g);CHECK,XP(B)::R(F)+S(G),DCHECK,XB(g)
      • K(e);P-FLIGHT::R(F)+S(G)
      • K(e);P-FLIGHT::QAR1(E)
      • K(e);S_FLIGHT::QAB(E)+S(G),DCHECK
      • Q(b);XP(A)::R(F)+S(G),XQ(b)
      • R(a);P_PINR(F),XP(D)::R(F)+S(G),XR(a)
      • R(h);XP(K)::R(F)+S(G),DCHECK,XR(h)
      • S(i);XR(J)::R(F)+S(G),XS(i)
      • S(i);XP(K)::R(F)+S(G),DCHECK,XS(i)
      • B(g);::R(F)+S(G),XB(g)
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