MESON Chess Problem Database

Problem Display
PID: 222422 (4R3/7p/3pp3/4b2Q/2pBkN2/1n6/2P1N3/7K w - - 0 1)

Chancellor, JG

1st Prize, Bradford Observer Budget, 1883

4R3/7p/3pp3/4b2Q/2pBkN2/1n6/2P1N3/7K

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qd5#
    • 1...Bg7
      • 2.Qd5#
    • 1...Bh8
      • 2.Qd5#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Sc3#
      • 1...Kd5
        • 2.Qf3#
      • 1...Bxd4
        • 2.S6xd4#
        • 2.Sc5#
      • 1...c3
        • 2.Sxc3#
      • 1...Sxd4!
    • 1.Qg6+?
      • 1...Kf3
        • 2.Qg2#
      • 1...hxg6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sdc3#
      • 1...Kxd5
        • 2.Qf3#
      • 1...Bxd4
        • 2.Sg3#
      • 1...Sxd4
        • 2.Sec3#
      • 1...exd5
        • 2.Qg4#
      • 1...c3
        • 2.Sdxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(d);OGATE,P_SPINP(f)::QAB1(F)
  • Tries
    • Try
      • S(E);XP(f)
      • Threat
        • S(C)
      • Vars
        • K(c);P_SPINB(d),S_FLIGHT::QAB(F)
        • P(b);::S(C),XP(b)
      • Refutation
        • S(a);XB(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(F)
      • Refutation
        • P(g);XQ(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);P_SPINB(d),S_FLIGHT,XS(E)::QAB(F)
      • B(d);N_GUARD,P_SPINP(f),SBLOCK,XB(D)::S(C)
      • S(a);SBLOCK,XB(D)::S(C)
      • P(f);P_SPINB(d),SBLOCK,XS(E)::QAR2(F)
      • P(b);::S(E),XP(b)
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