MESON Chess Problem Database

Problem Display
PID: 146818 (4R2B/5K2/1P1p4/N1nk1BbR/N7/5rpQ/4b3/8 w - - 0 1)

Herpai, S Ferenc

La Settimana Enigmistica, 1936

4R2B/5K2/1P1p4/N1nk1BbR/N7/5rpQ/4b3/8

#2

9 + 7

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sc3#
    • 1...Rf2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rf4
      • 2.Sc3#
    • 1...Rxf5+
      • 2.Qxf5#
    • 1...Bd3
      • 2.Sc3#
    • 1...Be3
      • 2.Sc3#
    • 1...Bf4
      • 2.Be4#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Rxf5+
        • 2.Qxf5#
      • 1...Rd3
        • 2.Qc4#
      • 1...Rf4
        • 2.Sc3#
      • 1...Be3
        • 2.Sc3#
      • 1...Bf4
        • 2.Be4#
      • 1...Bf6
        • 2.Be6#
      • 1...Sb3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD,N_PINB(D)::S(B),XR(b)
    • R(b);CHECK,OGATE,XB(D)::QAR2(A),XR(b)
    • B(a);S_CUTR(b)::S(B)
    • B(f);S_CUTR(b)::S(B)
    • B(f);N_PINB(D)::R(E)+B(D),DCHECK
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(b);CHECK,OGATE,XB(D)::QAR2(A),XR(b)
      • R(b);N_PINB(D),S_CUTB(a)::QAB1(A)
      • R(b);N_GUARD::S(B)
      • B(f);S_CUTR(b)::S(B)
      • B(f);N_PINB(D)::R(E)+B(D),DCHECK
      • S(d);N_GUARD::QAB1(A)
      • S(d);N_GUARD::QAB1(A),XS(d)
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