MESON Chess Problem Database

Problem Display
PID: 242685 (b7/B1p4K/7p/1p2nN2/2k3pr/b6r/N1Pn4/4Q2B w - - 0 1)

Hartong, Jan

Arbejder-Skak, 1951

b7/B1p4K/7p/1p2nN2/2k3pr/b6r/N1Pn4/4Q2B

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh1
      • 2.Se3#
    • 1...Rh2
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Bf3
      • 2.Se3#
    • 1...Sdf3
      • 2.Se3#
    • 1...Sef3
      • 2.Se3#
    • 1...Sc6
      • 2.Qe6#
    • 1...g3
      • 2.Se3#
  • Tries
    • 1.Qe2+?
      • 1...Rd3
        • 2.Se3#
      • 1...Sd3!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qd4#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Sdf3
        • 2.Qb3#
      • 1...Sef3
        • 2.Qd3#
      • 1...b4
        • 2.Qc5#
      • 1...Bb2
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sc6
        • 2.Qe6#
      • 1...g3
        • 2.Qc3#
      • 1...c5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD,XB(B)::S(E)
    • R(c);N_GUARD::S(E)
    • R(c);N_GUARD::S(E),XR(c)
    • B(k);S_CUTR(c)::S(E)
    • S(a);S_CUTR(c)::S(E)
    • S(h);S_CUTR(c)::S(E)
    • S(h);OGATE::QAB(A)
    • P(e);S_CUTR(c)::S(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);P_SPINR(c)::S(E)
      • Refutation
        • S(h);P_SPINS(h)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(c);XQ(A)::S(E),XR(c)
      • S(a);N_GUARD,S_CUTR(c)::QAB1(A)
      • S(h);N_GUARD,S_CUTR(c)::QAB1(A)
      • P(g);S_CUTB(b)::QAR1(A)
      • B(b);N_GUARD::QAR1(A)
      • B(b);N_GUARD::QAR1(A),XB(b)
      • S(a);OGATE::P(D),XS(a)
      • S(h);OGATE::QAB(A)
      • P(e);S_CUTR(c)::QAR1(A)
      • P(j);N_GUARD,S_CUTB(b)::S(E)
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