MESON Chess Problem Database

Problem Display
PID: 26014 (n7/3P4/p2P4/Qbk5/p1N2B2/1P1RPB2/pn1p1p2/qr1rbK2 w - - 0 1)

Subotic, Miroslav

The Problemist, 2001

n7/3P4/p2P4/Qbk5/p1N2B2/1P1RPB2/pn1p1p2/qr1rbK2

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...a3
      • 2.Qxa3#
  • Tries
    • 1.Se5?
      • threat
        • 2.b4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sc4
        • 2.Rd5#
      • 1...axb3!
    • 1.Rd4?
      • threat
        • 2.b4#
      • 1...Sxc4
        • 2.Rxc4#
      • 1...axb3
        • 2.Qa3#
      • 1...Sd3!
    • 1.d8S?
      • threat
        • 2.Se6#
        • 2.Sb7#
        • 2.Rd5#
      • 1...Sxd3
        • 2.Se6#
        • 2.Sb7#
      • 1...Sb6
        • 2.Se6#
        • 2.Sb7#
      • 1...Sc7
        • 2.Sb7#
      • 1...axb3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.b4#
      • 1...Sxc4
        • 2.Rxc4#
      • 1...axb3
        • 2.Qa3#
      • 1...Sd3
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(i);OGATE::QAB(H),XP(i)
  • Tries
    • Try
      • S(F);P_SPINR(C)
      • Threat
        • P(B)
      • Vars
        • S(f);XR(C)::S(F),XS(f)
        • S(f);N_PINR(C)::R1(C)
      • Refutation
        • P(i);XP(B)
    • Try
      • R(C);P_SPINS(F)
      • Threat
        • P(B)
      • Vars
        • S(f);OGATE,XS(F)::R1(C),XS(f)
        • P(i);OGATE,XP(B)::QAB(H)
      • Refutation
        • S(f);N_PINS(F)
    • Try
      • P(J);
      • Threat
        • DUALS(3)
      • Vars
        • S(m);::S(J)
      • Refutation
        • P(i);XP(B)
  • Actual
    • R(C);P_SPINS(F)
    • Threat
      • P(B)
    • Vars
      • S(f);OGATE,P_SPINS(f),XS(F)::R1(C),XS(f)
      • P(i);OGATE,XP(B)::QAB(H)
      • S(f);N_PINS(F)::R(C)+S(F)
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