MESON Chess Problem Database

Problem Display
PID: 272699 (1Q6/3Np3/2p3p1/3rPpK1/3k3n/1B2R3/nP1b4/1rqRN1B1 w - - 0 1)

Evans, TC

Sunday Referee, 1934

(First published on Sun Nov 25 1934)

1Q6/3Np3/2p3p1/3rPpK1/3k3n/1B2R3/nP1b4/1rqRN1B1

#2

10 + 11

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Sxc2#
    • 1...Qc5
      • 2.Rxd2#
    • 1...Rxe5
      • 2.Qxe5#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...f4
      • 2.Re2#
  • Tries
    • 1.Qb4+?
      • 1...Qc4
        • 2.Sc2#
        • 2.Rxd2#
        • 2.Qxc4#
      • 1...Sxb4!
  • Keys
    • 1.e6!
      • threat
        • 2.Qf4#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...f4+
        • 2.Re5#
      • 1...Rxd7
        • 2.Qe5#
      • 1...Qc2
        • 2.Sxc2#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rd6
        • 2.Qh8#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sg2
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);N_GUARD::R(A),XB(d)
    • R(g);OGATE,XP(G)::QAB1(J),XR(g)
    • S(c);N_GUARD,S_CUTQ(b)::QAR2(J)
    • S(f);N_GUARD::S(B)
    • S(f);CHECK,N_GUARD::S(B),XS(f)
    • P(h);N_PINR(F),P_PINP(G)::B(C)+R(F)
  • Tries
    • Try
      • Q(J);CHECK
      • Refutation
        • S(c);XQ(J)
  • Actual
    • P(G);
    • Threat
      • QAR2(J)
    • Vars
      • S(f);CHECK,N_GUARD::S(B),XS(f)
      • P(h);CHECK,N_PINR(F)::B(C)+R(F)
      • R(g);N_GUARD,XS(I)::QAB1(J)
      • Q(b);N_GUARD::S(B),XQ(b)
      • R(g);N_GUARD::QAB1(J),XR(g)
      • R(g);N_GUARD::QAB(J)
      • S(c);N_GUARD,S_CUTQ(b)::QAR2(J)
      • S(f);N_GUARD::S(B)
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