MESON Chess Problem Database

Problem Display
PID: 79981 (8/2B5/2p2p2/3k4/4R3/8/3K4/7Q w - - 0 1)

Fleming, David

The Problemist Supplement, 2008

8/2B5/2p2p2/3k4/4R3/8/3K4/7Q

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Re5+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qh4#
      • 1...Kc4!
    • 1.Qf3?
      • threat
        • 2.Qf5#
      • 1...Kc5
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...c5!
    • 1.Qa1?
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qa5#
      • 1...c5
        • 2.Qa8#
      • 1...Kxe4!
    • 1.Qf1?
      • threat
        • 2.Qc4#
        • 2.Qf5#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qc4#
        • 2.Qf5#
      • 1...f5
        • 2.Qc4#
        • 2.Qxf5#
      • 1...c5!
    • 1.Qh5+?
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe4!
    • 1.Qh7?
      • threat
        • 2.Qf5#
      • 1...Kc5
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...c5!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qf5#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qf5#
      • 1...c5
        • 2.Qe6#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(c);::QAR2(A),XP(c)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(b);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR2(A),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(c);::QAR2(A),XP(c)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAB1(A)
      • K(a);P-FLIGHT::QAR(A)
      • P(b);SBLOCK::QAB1(A)
      • P(c);::QAR2(A),XP(c)
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