MESON Chess Problem Database

Problem Display
PID: 266224 (8/b1P5/3K1p2/1Q6/1p1k1pr1/2prp1N1/b3B3/1q6 w - - 0 1)

Evans, TC

Sunday Referee, 1937

(First published on Sun Jan 3 1937)

8/b1P5/3K1p2/1Q6/1p1k1pr1/2prp1N1/b3B3/1q6

#2

5 + 11

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qxd3#
    • 1...Qc1
      • 2.Qxd3#
    • 1...Qe1
      • 2.Qxd3#
    • 1...Qf1
      • 2.Qxd3#
    • 1...Qg1
      • 2.Qxd3#
    • 1...Qh1
      • 2.Qxd3#
    • 1...Qb2
      • 2.Qxd3#
    • 1...Qb3
      • 2.Qxd3#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bc5+
      • 2.Qxc5#
    • 1...Bb8
      • 2.Qc5#
    • 1...c2
      • 2.Qxd3#
    • 1...b3
      • 2.Qa4#
      • 2.Qb4#
      • 2.Qd5#
  • Tries
    • 1.Qe5+?
      • 1...Kc4+
        • 2.Qd5#
      • 1...fxe5!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe4#
      • 1...Kc4+
        • 2.Qd5#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Rxg3
        • 2.Qxf4#
      • 1...fxg3
        • 2.Qxg4#
      • 1...c2
        • 2.Qxd3#
      • 1...Qh1
        • 2.Qxd3#
      • 1...Rd1
        • 2.Qxf6#
      • 1...Rd2
        • 2.Qxf6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...f3
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAR1(C),XR(d)
    • B(b);N_GUARD::QAR1(C),XB(b)
    • B(k);CHECK,N_GUARD::QAB1(C),XB(k)
    • B(k);N_GUARD,P_PINP(E)::QAB1(C)
    • P(c);S_CUTQ(a)::QAR1(C),XR(d)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);CHECK,P-FLIGHT,P_SPINR(d),S_CUTB(b)::QAB1(C)
      • Refutation
        • P(j);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(g);CHECK,P-FLIGHT,P_SPINR(d),S_CUTB(b)::QAB1(C)
      • B(k);CHECK,N_GUARD::QAB1(C),XB(k)
      • R(i);N_GUARD,XS(B)::QAR2(C),XP(h)
      • P(h);OGATEB,XS(B)::QAR(C),XR(i)
      • P(c);S_CUTQ(a)::QAR1(C),XR(d)
      • Q(a);N_GUARD::QAR1(C),XR(d)
      • R(d);::QAB(C),XP(j)
      • B(b);N_GUARD::QAR1(C),XB(b)
      • P(h);OGATEB::QAR(C),XR(i)
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