MESON Chess Problem Database

Problem Display
PID: 175584 (8/6K1/2P5/1p1k1b2/1PN1R3/4P2B/2Q5/8 w - - 0 1)

Stepanov, AS

Rigaer Tageblatt, 1900

8/6K1/2P5/1p1k1b2/1PN1R3/4P2B/2Q5/8

#2

8 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qd3#
      • 1...Bxe4
        • 2.Qc5#
      • 1...Kd6!
    • 1.Rd4+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qd1+?
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kxc6!
    • 1.Qd2+?
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kxc6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Rd6#
      • 1...Kxe6
        • 2.Qe4#
      • 1...Bxc2
        • 2.Sb6#
      • 1...Bxe6
        • 2.Bg2#
      • 1...bxc4
        • 2.Qxf5#
      • 1...Bd3
        • 2.Sb6#
        • 2.Qxd3#

There are these versions: 219117

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR2(A)
      • Vars
        • B(c);SBLOCK,XR(F)::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(b);P_SPINB(c),S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::B(C)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::B(C)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT,XR(F)::QAR2(A)
      • B(c);XQ(A)::S(E)
      • B(c);N_GUARD,SBLOCK,XR(F)::B(C)
      • P(a);SBLOCK,XS(E)::QAR2(A),XB(c)
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