MESON Chess Problem Database

Problem Display
PID: 67941 (8/8/1n1R1R1n/2pppp1K/4k3/4p3/4Q3/4N3 w - - 0 1)

Fomichev, Evgeny Vasilevich

Phenix, 1999

8/8/1n1R1R1n/2pppp1K/4k3/4p3/4Q3/4N3

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd3#
    • 1...Kf4
      • 2.Qf3#
    • 1...d4
      • 2.Qf3#
    • 1...f4
      • 2.Qd3#
  • Tries
    • 1.Rxf5?
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Sxf5
        • 2.Qg4#
      • 1...c4!
    • 1.Qc2+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Qd3#
      • 1...Kf4!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Qf3#
      • 1...Kd4!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kxd5
        • 2.Qd3#
      • 1...Sxd5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT,P_SPINP(d)::QAR1(B)
    • K(b);N_SPINP(a),P-FLIGHT,P_SPINP(f)::QAR1(B)
    • P(d);::QAB1(B)
    • P(f);::QAB1(B)
  • Tries
    • Try
      • R(E);XP(f)
      • Threat
        • QAB1(B)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT,P_SPINP(d)::QAR1(B)
        • K(b);N_SPINP(a),S_FLIGHT,XR(E)::QAR2(B)
        • S(h);N_GUARD,XR(E)::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(f)
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(d)
  • Actual
    • R(D);XP(d)
    • Threat
      • QAB1(B)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT,P_SPINP(f)::QAR1(B)
      • K(b);N_SPINP(a),S_FLIGHT,XR(D)::QAR2(B)
      • S(g);N_GUARD,XR(D)::QAR2(B)
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