MESON Chess Problem Database

Problem Display
PID: 110391 (1n6/N1p2K2/8/3k1p2/p2r4/2QP4/7B/8 w - - 0 1)

Volf, Josef

Nedele, 1904

1n6/N1p2K2/8/3k1p2/p2r4/2QP4/7B/8

#2

5 + 6

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qe5#
    • 1...Rc4
      • 2.Qe5#
      • 2.Qxc4#
    • 1...Rg4
      • 2.Qe5#
    • 1...Rh4
      • 2.Qe5#
    • 1...Sa6
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sd7
      • 2.Qc6#
  • Tries
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Rc4
        • 2.Qxc4#
      • 1...axb3!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...cxd6
        • 2.Qa5#
      • 1...Rc4
        • 2.Qe5#
      • 1...Sa6
        • 2.Qc6#
      • 1...Sd7
        • 2.Qc6#
      • 1...c5
        • 2.Qxc5#

This anticipates 174149(1927)

There are these versions: 181080

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE::QAR1(B)
    • S(f);N_GUARD::QAB1(B)
    • S(f);N_GUARD::QAB1(B),XS(f)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
      • Refutation
        • P(a);XQ(B)
  • Actual
    • B(A);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);P-FLIGHT,XB(A)::QAR2(B),XR(b)
      • R(b);OGATE,XP(C)::QAR2(B),XR(b)
      • P(e);N_GUARD,SBLOCK,XB(A)::QAR(B)
      • R(b);OGATE::QAR1(B)
      • S(f);N_GUARD::QAB1(B)
      • P(e);::QAR1(B),XP(e)
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