MESON Chess Problem Database

Problem Display
PID: 266557 (2K3n1/B1N1b3/3p2R1/4k3/5p1p/p2B4/b3rp2/7Q w - - 0 1)

Evans, TC

Sunday Referee, 1937

(First published on Sun Oct 17 1937)

2K3n1/B1N1b3/3p2R1/4k3/5p1p/p2B4/b3rp2/7Q

#2

6 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qe4#
    • 1...Rc2
      • 2.Qe4#
    • 1...Rd2
      • 2.Qe4#
    • 1...Re3
      • 2.Qa1#
    • 1...Re4
      • 2.Qxe4#
    • 1...Bb1
      • 2.Re6#
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be6+
      • 2.Rxe6#
    • 1...Sf6
      • 2.Rg5#
    • 1...f3
      • 2.Qh2#
    • 1...d5
      • 2.Re6#
  • Keys
    • 1.Be3!
      • threat
        • 2.Qe4#
      • 1...Be6+
        • 2.Rxe6#
      • 1...Rxe3
        • 2.Qa1#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf6
        • 2.Rg5#
      • 1...f3
        • 2.Qh2#
      • 1...d5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD,P_PINS(E)::QAR1(A)
    • R(b);N_GUARD::QAB(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • B(a);CHECK,N_GUARD::R1(C),XB(a)
    • S(j);SBLOCK,S_CUTB(i)::R(C)
    • P(e);OGATEB::QAB(A)
    • P(h);S_CUTB(a)::R1(C)
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • B(a);CHECK,N_GUARD::R1(C),XB(a)
      • R(b);N_GUARD,XB(D)::QAB(A)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • S(j);SBLOCK,S_CUTB(i)::R(C)
      • P(e);OGATEB::QAB(A)
      • P(h);S_CUTB(a)::R1(C)
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