MESON Chess Problem Database

Problem Display
PID: 235645 (1n6/4N3/p2p4/K2B1Q1r/PB1k1Pn1/3p3r/1N1P4/7b w - - 0 1)

Groeneveld, Cornelis

Norsk Sjakkblad, 1958

1n6/4N3/p2p4/K2B1Q1r/PB1k1Pn1/3p3r/1N1P4/7b

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Qxd3#
    • 1...Rf3
      • 2.Qe4#
    • 1...R3h4
      • 2.Qxd3#
    • 1...Bf3
      • 2.Qxd3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Se3
      • 2.Qxd3#
    • 1...Sc6+
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Bxh1?
      • threat
        • 2.Bc3#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Se5
        • 2.Qe4#
      • 1...d5!
    • 1.Bg2?
      • threat
        • 2.Bc3#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Se5
        • 2.Qe4#
      • 1...d5!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Bc3#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...d5
        • 2.Qxd3#
      • 1...Se5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAR1(H),XP(b)
    • R(c);S_CUTB(a)::QAR1(H)
    • B(a);S_CUTR(c)::QAR1(H),XP(b)
    • B(a);N_GUARD::QAR1(H),XB(a)
    • S(e);S_CUTR(c)::QAR1(H),XP(b)
    • S(i);CHECK,N_GUARD::S(I),XS(i)
    • S(i);N_GUARD::S(I)
  • Tries
    • Try
      • B(G);P_SPINQ(H),XB(a)
      • Threat
        • B(D)
      • Vars
        • R(f);CHECK,XQ(H)::S(I),XR(f)
        • S(i);CHECK,N_GUARD::S(I),XS(i)
        • S(e);N_PINQ(H)::QAR1(H)
      • Refutation
        • P(h);N_PINQ(H)
    • Try
      • B(G);P_SPINQ(H)
      • Threat
        • B(D)
      • Vars
        • R(f);CHECK,XQ(H)::S(I),XR(f)
        • S(i);CHECK,N_GUARD::S(I),XS(i)
        • S(e);N_PINQ(H)::QAR1(H)
      • Refutation
        • P(h);N_PINQ(H)
  • Actual
    • B(G);P_SPINQ(H)
    • Threat
      • B(D)
    • Vars
      • R(f);CHECK,XQ(H)::S(I),XR(f)
      • S(i);CHECK,N_GUARD::S(I),XS(i)
      • P(h);N_PINQ(H)::QAR1(H),XP(b)
      • S(e);N_PINQ(H)::QAR1(H)
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