MESON Chess Problem Database

Problem Display
PID: 208701 (3r3b/2n5/r2Q1p2/pNR1N1P1/2ppk1P1/2Bpp1P1/1KnPR1P1/1B6 w - - 0 1)

Storozhenko, Ivan Ivanovich

Zadachi i Etyudi, 2019

3r3b/2n5/r2Q1p2/pNR1N1P1/2ppk1P1/2Bpp1P1/1KnPR1P1/1B6

#2

13 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...dxc3+
      • 2.Sxc3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qf4#
      • 1...dxc3+
        • 2.Sxc3#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...fxg5
        • 2.Qg6#
      • 1...Sd5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...dxe2!
    • 1.Sd7?
      • threat
        • 2.Qf4#
      • 1...dxc3+
        • 2.Sxc3#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...dxe2
        • 2.Qxd4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Se6
        • 2.Qd5#
      • 1...fxg5!
    • 1.Qxd4+?
      • 1...Sxd4
        • 2.Rxe3#
      • 1...Rxd4!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sf2#
      • 1...dxc3+
        • 2.Sxc3#
      • 1...Kxd3
        • 2.Rxe3#
      • 1...cxd3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);CHECK,XB(F)::S(I),XP(e)
  • Tries
    • Try
      • S(K);
      • Threat
        • QAR1(M)
      • Vars
        • P(e);CHECK,XB(F)::S(I),XP(e)
        • R(k);XQ(M)::S(I),XR(k)
        • P(i);OGATE,XP(L)::QAB(M)
        • S(j);N_GUARD::QAR2(M)
        • S(j);N_GUARD::QAR2(M),XS(j)
      • Refutation
        • P(b);N_SPINP(c),P_SPINS(a),XR(D)
    • Try
      • S(K);
      • Threat
        • QAR1(M)
      • Vars
        • P(e);CHECK,XB(F)::S(I),XP(e)
        • R(h);XQ(M)::S(I),XR(h)
        • P(b);N_SPINP(c),P_SPINS(a),XR(D)::QAR1(M),XP(e)
        • S(j);N_GUARD::QAB1(M),XS(j)
        • S(j);N_GUARD::QAB1(M)
      • Refutation
        • P(i);XP(L)
    • Try
      • Q(M);CHECK,XP(e)
      • Vars
        • S(a);N_SPINP(c),P_SPINP(b),XQ(M)::R1(D),XP(c)
      • Refutation
        • R(k);XQ(M)
  • Actual
    • S(K);XP(b)
    • Threat
      • S(K)
    • Vars
      • P(e);CHECK,XB(F)::S(I),XP(e)
      • K(f);N_SPINP(c),P_SPINP(e),P_SPINS(a),S_FLIGHT,XS(K)::R1(D),XP(c)
      • P(d);SBLOCK,XS(K)::QAR1(M)
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