MESON Chess Problem Database

Problem Display
PID: 60663 (3RK2n/p7/1P1B4/3k3r/1R1Np3/1p6/1nP4b/7Q w - - 0 1)

McIntyre, Donald Glenoe

Natal Mercury, 1925

3RK2n/p7/1P1B4/3k3r/1R1Np3/1p6/1nP4b/7Q

#2

8 + 8

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Re5+
      • 2.Be7#
    • 1...Bg1
      • 2.Qxh5#
    • 1...Bxd6
      • 2.Qxh5#
  • Tries
    • 1.Bc7+?
      • 1...Bd6
        • 2.Qxh5#
      • 1...Kc5!
    • 1.Be7+?
      • 1...Bd6
        • 2.Qxh5#
      • 1...Ke5!
    • 1.Bb8+?
      • 1...Bd6
        • 2.Qxh5#
      • 1...Kc5!
    • 1.Bf8+?
      • 1...Bd6
        • 2.Qxh5#
      • 1...Ke5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa5#
      • 1...Re5+
        • 2.Be7#
      • 1...axb6
        • 2.Qa8#
      • 1...e3
        • 2.Qh1#
      • 1...Sd3
        • 2.c4#
      • 1...Sa4
        • 2.c4#
      • 1...Sc4
        • 2.Rb5#
      • 1...a5
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);CHECK,SBLOCK,S_CUTB(b)::R(G)+B(F)
    • B(b);OGATE::QAR(A),XR(f)
    • B(b);OGATE,P_SPINB(b),XB(F)::QAR(A),XR(f)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::QAR(A),XR(f)
      • Refutation
        • K(e);N_SPINP(d),P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::QAR(A),XR(f)
      • Refutation
        • K(e);N_SPINP(d),P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::QAR(A),XR(f)
      • Refutation
        • K(e);N_SPINP(d),P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::QAR(A),XR(f)
      • Refutation
        • K(e);N_SPINP(d),P-FLIGHT
  • Actual
    • Q(A);N_PINP(d)
    • Threat
      • QAR(A)
    • Vars
      • R(f);CHECK,SBLOCK,S_CUTB(b)::R(G)+B(F)
      • P(g);OGATE,XP(E)::QAB(A)
      • P(d);OGATEB::QAB(A)
      • S(a);N_GUARD::P(B)
      • S(a);SBLOCK::R(C)
      • P(g);::QAR(A),XP(g)
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