MESON Chess Problem Database

Problem Display
PID: 156739 (8/8/4pQnK/1pP5/1B1pBP2/RNP1kP2/7R/4n2N w - - 0 1)

Wirajaya, Daniel

The Problemist, 2014

8/8/4pQnK/1pP5/1B1pBP2/RNP1kP2/7R/4n2N

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf4
      • 2.Qxd4#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Sf1#
        • 2.Re2#
      • 1...Sxf3
        • 2.Re2#
      • 1...Sxf4
        • 2.Sf1#
        • 2.Qxd4#
      • 1...d3
        • 2.Sf1#
      • 1...Sg2!
    • 1.Sc1?
      • threat
        • 2.Re2#
      • 1...Sxf4
        • 2.Qxd4#
      • 1...Sg2
        • 2.cxd4#
      • 1...d3!
    • 1.Sd2?
      • threat
        • 2.Sf1#
      • 1...Sxf3
        • 2.cxd4#
      • 1...Sg2!
    • 1.Sxd4?
      • threat
        • 2.Re2#
      • 1...Sg2
        • 2.c4#
      • 1...Sxf4!
    • 1.c4?
      • threat
        • 2.Bd2#
      • 1...Sg2
        • 2.Sxd4#
      • 1...Sxf3!
  • Keys
    • 1.cxd4!
      • threat
        • 2.Bd2#
      • 1...Sxf3
        • 2.Sd2#
      • 1...Sg2
        • 2.Sc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK,XP(I)::QAB1(K),XP(c)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XP(F)::R1(B)
        • P(c);::S(A)
      • Refutation
        • S(a);
    • Try
      • S(D);
      • Threat
        • R1(B)
      • Vars
        • S(f);SBLOCK,XP(I)::QAB1(K),XP(c)
        • S(a);N_GUARD::R(C)+P(E),XP(c)
      • Refutation
        • P(c);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(a);N_GUARD,XP(F)::R(C)+P(E),XP(c)
      • Refutation
        • S(a);
    • Try
      • S(D);XP(c)
      • Threat
        • R1(B)
      • Vars
        • S(a);N_GUARD::R(C)+P(E)
      • Refutation
        • S(f);XP(I)
    • Try
      • P(E);
      • Threat
        • B(G)
      • Vars
        • S(a);N_GUARD::R(C)+S(D),XP(c)
      • Refutation
        • S(a);XP(F)
  • Actual
    • P(E);XP(c)
    • Threat
      • B(G)
    • Vars
      • S(a);N_GUARD,XP(F)::R(C)+S(D)
      • S(a);N_GUARD::R(C)+S(D)
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