MESON Chess Problem Database

Problem Display
PID: 173685 (2Nr4/RP6/P3p3/kNn1q1BR/p1Q1p1P1/1p4pK/3rP3/8 w - - 0 1)

Boros, Sandor

Tijdschrift vd KNSB, 1932

2Nr4/RP6/P3p3/kNn1q1BR/p1Q1p1P1/1p4pK/3rP3/8

#2

11 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb7
      • 2.axb7#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qb5#
      • 1...Sxa6
        • 2.Rxa6#
        • 2.Qxa4#
      • 1...Sxb7
        • 2.Qxa4#
        • 2.axb7#
      • 1...Sd3
        • 2.Bxd8#
        • 2.Qxa4#
      • 1...Sd7
        • 2.Qxa4#
      • 1...Qxc3!
    • 1.Bxd2+?
      • 1...Qc3
        • 2.Bxc3#
      • 1...Rxd2!
    • 1.Bxd8+?
      • 1...Qc7
        • 2.Bxc7#
      • 1...Rxd8!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Qb5#
      • 1...Sxa6
        • 2.Rxa6#
      • 1...Sxb7
        • 2.axb7#
      • 1...Sd3
        • 2.Bxd8#
      • 1...Sd7
        • 2.Bxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);OGATE,XP(J)::R(I)+P(H),XS(g)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • S(g);N_GUARD::QAR1(C),XP(d)
      • Refutation
        • Q(h);XS(E)
    • Try
      • B(F);CHECK,XR(a)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::B(F),XQ(h)
      • Refutation
        • R(j);XB(F)
    • Try
      • B(F);CHECK,XR(j)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::B(F),XQ(h)
      • Refutation
        • R(a);XB(F)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • S(g);OGATE,P_SPINS(g),XP(H)::R1(I),XS(g)
      • S(g);OGATE,XP(J)::R(I)+P(H),XS(g)
      • S(g);S_CUTQ(h),S_CUTR(a)::B(F),XR(j)
      • S(g);S_CUTQ(h),S_CUTR(j)::B(F),XR(a)
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