MESON Chess Problem Database

Problem Display
PID: 44072 (4B3/2B2NbK/1p3r1p/2kb3R/R2nQ3/1pN1n3/2q2r2/8 w - - 0 1)

Beecken, H

Brisbane Referee, 1927

4B3/2B2NbK/1p3r1p/2kb3R/R2nQ3/1pN1n3/2q2r2/8

#2

8 + 11

20 De Problemist 1931
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Sxe4#
    • 1...Qc1
      • 2.Qxd4#
    • 1...Qa2
      • 2.Qxd4#
    • 1...Qb2
      • 2.Qxd4#
    • 1...Qe2
      • 2.Qxd4#
    • 1...R2f5
      • 2.Qxd4#
    • 1...Rf3
      • 2.Bd6#
    • 1...Rf4
      • 2.Bd6#
    • 1...R6f5
      • 2.Bd6#
      • 2.Qe7#
    • 1...Rd6
      • 2.Bxd6#
    • 1...Sd1
      • 2.Rxd5#
    • 1...Sf1
      • 2.Rxd5#
    • 1...Sg2
      • 2.Rxd5#
    • 1...Sc4
      • 2.Rxd5#
    • 1...Sg4
      • 2.Rxd5#
    • 1...Sef5
      • 2.Qxd5#
    • 1...Sdf5
      • 2.Qb4#
    • 1...Se6
      • 2.Bd6#
  • Keys
    • 1.Sd8!
      • threat
        • 2.Sb7#
      • 1...Qxe4+
        • 2.Sxe4#
      • 1...R2f5
        • 2.Qxd4#
      • 1...R6f5
        • 2.Qe7#
      • 1...Sef5
        • 2.Qxd5#
      • 1...Sdf5
        • 2.Qb4#

Anticipated by 44070(1923)

This anticipates 43745(1930)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(a);CHECK,XQ(C)::S(A),XQ(a)
    • Q(a);N_PINQ(C)::QAB1(C),XS(e)
    • R(b);N_PINQ(C),N_SPINB(g)::QAB1(C),XS(e)
    • R(i);N_GUARD::B(E)
    • R(i);N_GUARD::B(E),XR(i)
    • S(d);N_GUARD::R1(D),XB(g)
    • S(d);N_PINQ(C),N_SPINB(g)::QAR1(C),XB(g)
    • S(e);N_PINQ(C),N_SPINB(g)::QAB1(C)
    • S(e);S_CUTR(i)::B(E)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(a);CHECK,XQ(C)::S(A),XQ(a)
      • R(b);N_PINQ(C),N_SPINB(g)::QAB1(C),XS(e)
      • R(i);N_PINQ(C),N_SPINB(g)::QAB(C)
      • S(d);N_PINQ(C),N_SPINB(g)::QAR1(C),XB(g)
      • S(e);N_PINQ(C),N_SPINB(g)::QAB1(C)
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