MESON Chess Problem Database

Problem Display
PID: 270245 (3n3B/1p3n1b/1K3p1r/2P4r/2NkB1R1/2p2P2/Q4P2/b7 w - - 0 1)

Thomson, Robert Gavin

Sunday Referee, 1931

(First published on Sun Jun 7 1931)

3n3B/1p3n1b/1K3p1r/2P4r/2NkB1R1/2p2P2/Q4P2/b7

#2

9 + 10

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Bf5#
      • 2.Bg6#
      • 2.Bxh7#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qd3#
      • 1...Kxc4
        • 2.Qa4#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Se5!
    • 1.Qd2+?
      • 1...Kxc4
        • 2.Bd5#
      • 1...cxd2!
    • 1.Qe2?
      • threat
        • 2.Qd3#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Se5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qd5#
      • 1...fxe5+
        • 2.Bg6#
      • 1...f5+
        • 2.Sc6#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Rxe5
        • 2.Qa4#
      • 1...Bxe4
        • 2.Rxe4#
      • 1...c2
        • 2.Qxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);N_SPINP(e),OGATEB,P-FLIGHT,P_SPINP(b),XS(D)::QAR2(A)
        • B(i);OGATE,P_SPINB(i),XB(E)::QAR1(A),XB(i)
      • Refutation
        • S(h);N_SPINP(e)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT,XS(D)::R(F)+B(E),DCHECK
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(i);OGATE,P_SPINB(i),XB(E)::QAR1(A),XB(i)
      • Refutation
        • S(h);N_SPINP(e)
  • Actual
    • S(D);N_PINP(e)
    • Threat
      • QAR1(A)
    • Vars
      • P(e);CHECK,P_SPINP(e),XS(D)::R(F)+B(E)
      • P(e);CHECK::B(I)+S(D),DCHECK
      • K(c);P_SPINP(e),S_FLIGHT,XS(D)::QAR1(A)
      • R(d);SBLOCK,XS(D)::QAR(A)
      • B(i);OGATE,P_SPINB(i),XB(E)::R1(F),XB(i)
      • P(b);OGATEB::QAB(A),XB(a)
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