MESON Chess Problem Database

Problem Display
PID: 96394 (8/3N4/8/2P5/2bNkP2/4p1RB/8/Q1K5 w - - 0 1)

Ferron de la Fuente, Ernesto

3rd HM., Problemas, 1969

8/3N4/8/2P5/2bNkP2/4p1RB/8/Q1K5

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bf5#
    • 1...Kxf4
      • 2.Rg4#
    • 1...Kd5
      • 2.Bg2#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qd4#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qa8#
      • 1...Kd3!
    • 1.Sf5?
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Rxe3#
      • 1...Kxf4
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kd5!
    • 1.Sf6+?
      • 1...Kd3
        • 2.Bf1#
        • 2.Bf5#
      • 1...Kxf4!
    • 1.Bg2+?
      • 1...Kd3
        • 2.Se5#
      • 1...Kxf4!
    • 1.Bf5+?
      • 1...Kxf4
        • 2.Rg4#
      • 1...Kd5!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Rxe3#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(a),S_FLIGHT::B(D)
    • K(c);OGATEB,P-FLIGHT,XP(F)::R1(C)
    • K(c);S_FLIGHT::B(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT,XP(F)::QAB1(A)
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(H);CHECK
      • Refutation
        • K(c);P-FLIGHT,XP(F)
    • Try
      • B(D);CHECK
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::S(H)
      • Refutation
        • K(c);P-FLIGHT,XP(F)
    • Try
      • B(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(F)::R1(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
      • K(c);P-FLIGHT,XP(F)::QAB1(A)
      • K(c);S_FLIGHT::QAB(A)
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