MESON Chess Problem Database

Problem Display
PID: 95218 (3R2nk/6p1/4N2p/8/1p6/8/b1Q5/K7 w - - 0 1)

Smutny, Jan

Pravo lidu, 1912

3R2nk/6p1/4N2p/8/1p6/8/b1Q5/K7

#2

4 + 6

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qxg7#
      • 1...Kh7
        • 2.Qxg7#
      • 1...Bxe6!
    • 1.Qc7?
      • threat
        • 2.Qxg7#
      • 1...Kh7
        • 2.Qxg7#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#
      • 1...Bxe6!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qh7#
      • 1...hxg5
        • 2.Qh2#
      • 1...g6
        • 2.Qb2#
      • 1...Bb1
        • 2.Sf7#

This anticipates 129812(1929)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);P_PINP(d)
      • Threat
        • QAB1(B),XP(d)
      • Vars
        • K(f);N_SPINP(d),N_SPINS(e),P-FLIGHT::QAR1(B),XP(d)
      • Refutation
        • B(a);XS(C)
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(d)
      • Vars
        • K(f);N_SPINS(e),P-FLIGHT,P_SPINP(d)::QAR1(B),XP(d)
        • P(d);::QAB1(B)
      • Refutation
        • B(a);XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • P(c);OGATEB,XS(C)::QAR(B)
      • P(d);OGATEB::QAB(B)
      • B(a);N_GUARD::S(C)
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