MESON Chess Problem Database

Problem Display
PID: 270543 (8/8/2B2r2/K1pr1PPQ/1pN1n1RP/4pkB1/4ppn1/5b2 w - - 0 1)

Subotic, Miroslav

Probleemblad, 2022

8/8/2B2r2/K1pr1PPQ/1pN1n1RP/4pkB1/4ppn1/5b2

#2

9 + 11

3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Se5#
      • 2.Bxe4#
    • 1...Rd2
      • 2.Se5#
      • 2.Bxe4#
    • 1...Rd3
      • 2.Se5#
      • 2.Bxe4#
    • 1...Rd4
      • 2.Se5#
    • 1...Re5
      • 2.Sxe5#
    • 1...Rdxf5
      • 2.Bxe4#
    • 1...Rdd6
      • 2.Se5#
      • 2.Bxe4#
    • 1...Rd7
      • 2.Se5#
      • 2.Bxe4#
    • 1...Rd8
      • 2.Se5#
      • 2.Bxe4#
    • 1...Sd2
      • 2.Se5#
    • 1...Sc3
      • 2.Se5#
    • 1...Sxg3
      • 2.Se5#
    • 1...Sxg5
      • 2.Se5#
    • 1...Sd6
      • 2.Se5#
  • Tries
    • 1.Be5?
      • threat
        • 2.Rg3#
      • 1...Rxe5
        • 2.Sxe5#
      • 1...Sxg5
        • 2.Rd4#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sc3
        • 2.Rd4#
      • 1...Sg3
        • 2.Rf4#
      • 1...Sd6
        • 2.Rd4#
      • 1...Sf4!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Rf4#
      • 1...Sxh4
        • 2.Rg1#
      • 1...Se1
        • 2.Rg1#
      • 1...Sf4
        • 2.Rg3#
      • 1...Sg3
        • 2.Se5#

Anticipated by 270362(2021)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(j);N_GUARD,P_SPINS(h)::S(B)
    • R(j);N_GUARD,P_SPINS(h)::S(B),XR(j)
    • R(j);OGATE,P_SPINS(h),XP(F)::B(I),XS(h)
    • S(h);P_SPINR(j)::S(B)
    • S(h);P_SPINR(j),XB(A)::S(B)
    • S(h);P_SPINR(j),XP(G)::S(B)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB(H)+R(C),DCHECK
      • Vars
        • R(j);P_SPINS(h),XB(A)::S(B),XR(j)
        • S(h);OGATE,P_SPINR(j),XP(G)::QAB(H)+R(C)
        • S(h);OGATE,P_SPINR(j)::QAB(H)+R(C)
        • S(h);P_SPINR(j),SBLOCK::QAB(H)+R(C),DCHECK
      • Refutation
        • S(d);
  • Actual
    • B(A);
    • Threat
      • QAB(H)+R(C),DCHECK
    • Vars
      • S(d);OGATE,XP(D)::QAB(H)+R(C)
      • S(d);OGATE::QAB(H)+R(C)
      • S(d);SBLOCK::QAB(H)+R(C),DCHECK
      • S(h);P_SPINR(j)::S(B)
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