MESON Chess Problem Database

Problem Display
PID: 100962 (8/3p4/4kp2/7Q/4N2n/BKP1R3/3Prb2/8 w - - 0 1)

Gevers, Raymond

Good Companions (October), 1918

8/3p4/4kp2/7Q/4N2n/BKP1R3/3Prb2/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxf2#
    • 1...d6
      • 2.Sc5#
  • Tries
    • 1.Sg5+?
      • 1...Kf5
        • 2.Sh3#
        • 2.Se6#
      • 1...Kd5!
    • 1.c4?
      • threat
        • 2.Qd5#
      • 1...Rxd2
        • 2.Sxf2#
      • 1...Sf5
        • 2.Sg5#
      • 1...f5
        • 2.Qe8#
      • 1...d5
        • 2.Qxd5#
      • 1...d6
        • 2.Sc5#
      • 1...Rxe3+!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qd5#
      • 1...d5+
        • 2.Qxd5#
      • 1...Rxd2
        • 2.Sxf2#
      • 1...Sf5
        • 2.Sg5#
      • 1...f5
        • 2.Qe8#
      • 1...d6
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,XP(A)::R(E)+S(F),XB(b)
    • P(f);SBLOCK::R(E)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(D);
      • Threat
        • QAB1(G)
      • Vars
        • R(a);N_GUARD,XP(A)::R(E)+S(F),XB(b)
        • S(c);SBLOCK::R(E)+S(F),DCHECK
        • P(e);SBLOCK::QAR2(G)
        • P(f);::QAB1(G),XP(f)
        • P(f);SBLOCK::R(E)+S(F),DCHECK
      • Refutation
        • R(a);CHECK,XR(E)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAB1(G)
    • Vars
      • P(f);CHECK::QAB1(G),XP(f)
      • R(a);N_GUARD,XP(A)::R(E)+S(F),XB(b)
      • S(c);SBLOCK::R(E)+S(F),DCHECK
      • P(e);SBLOCK::QAR2(G)
      • P(f);SBLOCK::R(E)+S(F),DCHECK
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