MESON Chess Problem Database

Problem Display
PID: 175652 (8/1B5K/1p5B/q2P4/1P1pkPQ1/2R1P2p/1N3p2/1b6 w - - 0 1)

Dale, Edward

Philadelphia Times, 1900

8/1B5K/1p5B/q2P4/1P1pkPQ1/2R1P2p/1N3p2/1b6

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.d6#
    • 1...Qa1
      • 2.d6#
    • 1...Qa3
      • 2.d6#
    • 1...dxe3
      • 2.Rc4#
    • 1...b5
      • 2.d6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd2#
        • 2.Sd6#
        • 2.f5#
      • 1...Qxb4
        • 2.Sd2#
        • 2.f5#
        • 2.d6#
      • 1...dxe3
        • 2.f5#
      • 1...f1Q
        • 2.Sd2#
        • 2.Sd6#
      • 1...f1S
        • 2.Sd6#
        • 2.f5#
      • 1...f1R
        • 2.Sd2#
        • 2.Sd6#
      • 1...Qa2
        • 2.Sd6#
        • 2.f5#
        • 2.d6#
      • 1...Qc5
        • 2.Sd2#
        • 2.f5#
      • 1...Bd3
        • 2.f5#
      • 1...d3
        • 2.f5#
      • 1...dxc3!
    • 1.Qg2+?
      • 1...Kf5
        • 2.Qg6#
      • 1...hxg2!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Re6#
      • 1...Kxe3+
        • 2.f5#
      • 1...Kxd5+
        • 2.Rg6#
      • 1...dxe3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD,XP(D)::B(I)+P(G)
    • Q(f);N_GUARD::B(I)+P(G)
    • P(d);OGATEB,SBLOCK,XP(C)::R(B)
    • P(g);S_CUTQ(f)::B(I)+P(G)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(d);XP(C)::QAR(F)+P(E)
        • B(a);::QAR(F)+P(E)
        • P(d);::QAR(F)+P(E)
      • Refutation
        • P(d);XR(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • P(c);XQ(F)
  • Actual
    • R(B);
    • Threat
      • R(B)
    • Vars
      • K(e);CHECK,P-FLIGHT,XP(C)::B(H)+P(E)
      • K(e);CHECK,OGATEB,S_FLIGHT,XP(G)::B(I)+R(B)
      • P(d);OGATEB,SBLOCK,XP(C)::R(B)
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