MESON Chess Problem Database

Problem Display
PID: 169191 (3Q3n/8/2N5/4pN1p/R3Pk2/1p1pR1p1/1r3prq/B2B1Kb1 w - - 0 1)

Stojnic, Dragan

2nd Comm., SuperProblem 117. TT, 2014

3Q3n/8/2N5/4pN1p/R3Pk2/1p1pR1p1/1r3prq/B2B1Kb1

#2

9 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Qxh4#
    • 1...Rb1
      • 2.Bxe5#
    • 1...Ra2
      • 2.Bxe5#
    • 1...Rc2
      • 2.Bxe5#
    • 1...Rd2
      • 2.Bxe5#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Rf3#
      • 1...Kxe3
        • 2.Qg5#
      • 1...Re2!
    • 1.Sb4?
      • threat
        • 2.Sxd3#
        • 2.Sd5#
      • 1...Rd2
        • 2.Sd5#
      • 1...d2
        • 2.Sd3#
        • 2.Sd5#
      • 1...Re2!
    • 1.Qg8?
      • threat
        • 2.Rf3#
      • 1...Re2
        • 2.Bxe5#
      • 1...Sg6!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sxd3#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Rd2
        • 2.Rf3#
      • 1...Re2
        • 2.Rf3#
      • 1...d2
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(e);N_GUARD::QAR2(I),XQ(e)
    • R(b);OGATE,P_PINB(B)::B(A),XP(j)
    • R(b);OGATE::B(A),XP(j)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(D)
      • Vars
        • K(i);S_FLIGHT,XR(D)::QAB(I)
      • Refutation
        • R(b);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::S(H)
      • Refutation
        • R(b);
    • Try
      • Q(I);
      • Threat
        • R1(D)
      • Vars
        • R(b);OGATE::B(A),XP(j)
      • Refutation
        • S(l);
  • Actual
    • S(H);XP(j)
    • Threat
      • S(H),XP(g)
    • Vars
      • K(i);OGATEB,P_SPINR(b),S_FLIGHT,XS(H)::QAB1(I)
      • R(b);::R1(D)
      • P(g);::S(H)
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