MESON Chess Problem Database

Problem Display
PID: 234884 (3RKR2/4n3/2p5/4k3/3N1N2/r7/4p3/3bQ3 w - - 0 1)

Haring, Jacobus

Revista Romana de Sah, 1956

3RKR2/4n3/2p5/4k3/3N1N2/r7/4p3/3bQ3

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Qxe2#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qxe7#
      • 1...Ke4
        • 2.Qxe7#
      • 1...Sf5
        • 2.Sxc6#
      • 1...Ra7
        • 2.Sf3#
      • 1...Bb3
        • 2.Sf3#
      • 1...Sd5
        • 2.Sxc6#
      • 1...Sg6
        • 2.Sxc6#
      • 1...Sc8
        • 2.Sxc6#
      • 1...Sg8
        • 2.Sxc6#
      • 1...c5!
    • 1.Qxe2+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Bxe2!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxe7#
      • 1...Ke4
        • 2.Qxe7#
      • 1...Sd5
        • 2.Sg6#
      • 1...Ra7
        • 2.Sd3#
      • 1...Bb3
        • 2.Sd3#
      • 1...Sf5
        • 2.Sg6#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sc8
        • 2.Sg6#
      • 1...Sg8
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,S_CUTR(c)::QAR(A),XP(b)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAR2(A),XS(f)
      • Vars
        • K(d);P-FLIGHT::QAR(A),XS(f)
        • S(f);N_GUARD::S(B),XP(e)
        • R(c);N_GUARD::S(B)
        • B(a);S_CUTR(c)::S(B)
      • Refutation
        • P(e);
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR2(A),XR(c)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAR2(A),XS(f)
    • Vars
      • K(d);P-FLIGHT::QAR(A),XS(f)
      • S(f);N_GUARD::S(C)
      • R(c);N_GUARD::S(C)
      • B(a);S_CUTR(c)::S(C)
      • S(f);N_GUARD::S(C),XS(f)
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