MESON Chess Problem Database

Problem Display
PID: 226599 (1qN2Bn1/8/2p1p3/1p1kp3/r5Q1/r2PP1n1/N2R2K1/8 w - - 0 1)

Marsland, GE

Sunday Chronicle, 1945

(First published on Sun Jul 15 1945)

1qN2Bn1/8/2p1p3/1p1kp3/r5Q1/r2PP1n1/N2R2K1/8

#2

8 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Sxb6#
    • 1...Qa8
      • 2.Sb6#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rxd3
      • 2.Sc3#
    • 1...Rb4
      • 2.Sxb4#
    • 1...Rc4
      • 2.dxc4#
    • 1...Ra5
      • 2.Sb4#
    • 1...Ra6
      • 2.Sb4#
    • 1...Ra7
      • 2.Sb4#
    • 1...Ra8
      • 2.Sb4#
    • 1...b4
      • 2.Qc4#
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qc5#
      • 1...Rxd3
        • 2.Sc3#
        • 2.Rxd3#
      • 1...Rxb4
        • 2.Sxb4#
      • 1...c5
        • 2.Qxc5#
      • 1...Qd6
        • 2.Sb6#
        • 2.Qxd6#
      • 1...Qa7
        • 2.Qd6#
      • 1...Qb6
        • 2.Sxb6#
        • 2.Qd6#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Se4
        • 2.dxe4#
      • 1...Se7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD::S(G),XQ(i)
    • Q(i);N_GUARD::S(G)
    • R(a);N_GUARD::S(A),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(D)::S(A)
    • R(c);N_GUARD::S(A),XR(c)
    • R(c);OGATE::R(B)+P(D)DCHECK,XR(c)
    • R(c);N_GUARD::S(A)
    • P(d);N_GUARD,S_CUTR(c)::QAB1(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(c);XQ(F)::S(A),XR(c)
      • P(g);::QAR1(F),XP(g)
      • Q(i);N_GUARD::QAR1(F)
      • R(a);N_GUARD::S(A),XR(a)
      • S(b);OGATE::R(B)+P(D)DCHECK,XS(b)
      • S(j);N_GUARD::S(G),XS(j)
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