MESON Chess Problem Database

Problem Display
PID: 235408 (2Q5/pK1p3p/R2N3r/2Pkp1n1/8/1Pp1PP1B/1b1N3r/3R2Bb w - - 0 1)

Pituk, Alexander

Alexander Pituk Chess Compositions II (Torok/Labai), 2005

2Q5/pK1p3p/R2N3r/2Pkp1n1/8/1Pp1PP1B/1b1N3r/3R2Bb

#2

12 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.Rxd6#
    • 1...Bg2
      • 2.Sb1#
      • 2.Sf1#
      • 2.S2c4#
      • 2.S2e4#
    • 1...Sxf3
      • 2.e4#
    • 1...Se6
      • 2.e4#
    • 1...Sf7
      • 2.e4#
  • Tries
    • 1.Bxd7?
      • threat
        • 2.Qc6#
      • 1...Rxd6
        • 2.Rxd6#
      • 1...e4!
    • 1.Qg8+?
      • 1...Kxc5
        • 2.Qc4#
      • 1...Se6
        • 2.e4#
      • 1...Sf7
        • 2.e4#
      • 1...Re6!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qc6#
      • 1...Kxc5
        • 2.Qb5#
      • 1...R2xh3
        • 2.S2e4#
      • 1...R6xh3
        • 2.S6e4#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Sxh3
        • 2.e4#
      • 1...e4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(h);OGATE,XS(J)::R1(I),XR(h)
    • S(g);N_GUARD,XP(F)::P(E)
    • S(g);N_GUARD::P(E)
  • Tries
    • Try
      • B(G);XP(j)
      • Threat
        • QAB1(L)
      • Vars
        • R(h);OGATE,XS(J)::R1(I),XR(h)
      • Refutation
        • P(f);
    • Try
      • Q(L);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_PINP(F),XP(H)::QAR1(L)
        • S(g);P_SPINS(g)::P(E)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • Q(L);XP(j)
    • Threat
      • QAB1(L)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_PINP(F),XP(H)::QAR1(L)
      • R(c);N_GUARD,XB(G)::R(A)+S(C)
      • R(h);N_GUARD,XB(G)::QAR(L)+S(J)
      • R(h);OGATE,P_SPINR(h),XS(J)::QAR1(L),XR(h)
      • S(g);N_GUARD,XB(G)::P(E)
      • P(f);OGATEB::QAR2(L)
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