MESON Chess Problem Database

Problem Display
PID: 163762 (1B2qQ2/1NN1bn2/1pBP2p1/1R1pk3/6P1/2Pp4/3P4/2n2R1K w - - 0 1)

Wirajaya, Daniel

StrateGems, 2014

1B2qQ2/1NN1bn2/1pBP2p1/1R1pk3/6P1/2Pp4/3P4/2n2R1K

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.Qxe7#
    • 1...Qxb8
      • 2.Qxe7#
    • 1...Sg5
      • 2.Qf4#
    • 1...Sxd6
      • 2.Qf4#
    • 1...Sh6
      • 2.Qf4#
    • 1...Sd8
      • 2.Qf4#
    • 1...Sh8
      • 2.Qf4#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Bc6#
      • 1...Qxb5
        • 2.Qxe7#
      • 1...Bxd6
        • 2.Qg7#
      • 1...Sxd6
        • 2.Qf4#
      • 1...Qc6
        • 2.Bxc6#
        • 2.Qxe7#
      • 1...Sb3!
    • 1.Rf5+?
      • 1...Ke4
        • 2.Bxd5#
        • 2.Rb4#
      • 1...gxf5!
    • 1.Qg7+?
      • 1...Ke4
        • 2.Bxd5#
        • 2.Rb4#
        • 2.Qd4#
      • 1...Bf6!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sc7#
      • 1...Ke4
        • 2.Sf6#
      • 1...Ke6
        • 2.Sc7#
      • 1...Qxc6
        • 2.Qxe7#
      • 1...Bxd6
        • 2.Qxe8#
      • 1...Sxd6
        • 2.Sf4#
      • 1...Sb3
        • 2.Re1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_GUARD,XB(G)::QAR2(L),XB(g)
    • Q(i);N_GUARD,XB(K)::QAR2(L),XB(g)
    • S(h);OGATE::QAB1(L)
    • S(h);OGATE,XP(H)::QAB1(L)
  • Tries
    • Try
      • B(G);XP(c)
      • Threat
        • R(F)+B(G)
      • Vars
        • Q(i);N_GUARD,XR(F)::QAR2(L),XB(g)
        • B(g);N_GUARD,XP(H)::QAB(L)
        • S(h);OGATE,XP(H)::QAB1(L)
      • Refutation
        • S(a);
    • Try
      • R(A);CHECK
      • Refutation
        • P(f);XR(A)
    • Try
      • Q(L);CHECK
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • S(J);XP(c)
    • Threat
      • R(F)+S(J)
    • Vars
      • K(d);P-FLIGHT::B(G)+S(J),DCHECK
      • K(d);P-FLIGHT::S(J)
      • Q(i);N_GUARD,P_PINS(J),XB(G)::QAR2(L),XB(g)
      • B(g);OGATEB,P_SPINB(g),XP(H)::QAR(L),XQ(i)
      • S(h);P_SPINS(h),XP(H)::R(F)+S(J)
      • S(a);N_GUARD::R(A)
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