MESON Chess Problem Database

Problem Display
PID: 227001 (3R4/n3p2B/4Kpr1/B1p2N2/Q1n1kp2/6R1/2P3P1/1N2bq2 w - - 0 1)

Marsland, GE

Sunday Chronicle, 1946

(First published on Sun Jul 14 1946)

3R4/n3p2B/4Kpr1/B1p2N2/Q1n1kp2/6R1/2P3P1/1N2bq2

#2

10 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2
      • 2.Qxc4#
    • 1...Qd3
      • 2.cxd3#
    • 1...Qh1
      • 2.Qxc4#
    • 1...Qf3
      • 2.Qxc4#
      • 2.gxf3#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bf2
      • 2.Sd2#
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bxg3
      • 2.Sd2#
      • 2.Sc3#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qc6#
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sc3#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Qd3
        • 2.cxd3#
      • 1...Qf3
        • 2.Qxc4#
        • 2.gxf3#
      • 1...Sb5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD,XP(C)::QAR2(E),XS(c)
    • Q(b);OGATE::P(B),XQ(b)
    • Q(b);N_GUARD::QAR2(E),XS(c)
    • B(a);N_GUARD::S(A),XB(a)
    • S(i);N_GUARD::QAB(E),XS(i)
    • S(i);N_GUARD::QAB(E)
  • Actual
    • B(F);
    • Threat
      • S(A)
    • Vars
      • R(h);XR(D)::B(I)+S(G),DCHECK,XR(h)
      • B(a);XB(F)::S(A),XB(a)
      • Q(b);OGATE::P(B),XQ(b)
      • S(i);OGATE::QAB(E)
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