MESON Chess Problem Database

Problem Display
PID: 44875 (3R4/4NpK1/8/2rpk1N1/8/2pPr1P1/bQ4n1/1B6 w - - 0 1)

Hirschenson, Aaron

Retter, Yosef

1st Prize, Israel Ring Ty., 1962/I

3R4/4NpK1/8/2rpk1N1/8/2pPr1P1/bQ4n1/1B6

#2

8 + 8

3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxd5#
  • Tries
    • 1.Sxf7+?
      • 1...Kd4
        • 2.Sf5#
      • 1...Ke6!
    • 1.Qxc3+?
      • 1...d4
        • 2.Qxd4#
      • 1...Rxc3!
    • 1.Qf2?
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Sf3#
      • 1...Rf3
        • 2.d4#
      • 1...Rc6
        • 2.Sxc6#
      • 1...Sf4
        • 2.Qxe3#
        • 2.Qxf4#
      • 1...f6
        • 2.Qxf6#
      • 1...f5!
    • 1.Qb8+?
      • 1...Kd4
        • 2.Sf5#
      • 1...Rc7!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Sc6#
      • 1...Rf3
        • 2.Sxf3#
      • 1...Rc6
        • 2.d4#
      • 1...f6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD,S_CUTB(a)::R1(H),XP(f)
  • Tries
    • Try
      • S(E);CHECK,XP(h)
      • Vars
        • K(g);S_FLIGHT::S(F)
      • Refutation
        • K(g);N_SPINP(c),P-FLIGHT
    • Try
      • Q(B);CHECK,XP(c)
      • Vars
        • P(f);P_SPINP(f)::QAB1(B),XP(f)
      • Refutation
        • R(e);XQ(B)
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAB1(B)
      • Vars
        • K(g);P_SPINP(f),P_SPINR(d),S_FLIGHT::S(E)
        • R(d);::P(C)
        • R(e);N_GUARD::S(F),XR(e)
        • P(h);::QAB1(B),XP(h)
      • Refutation
        • P(h);
    • Try
      • Q(B);CHECK,N_PINP(c)
      • Vars
        • K(g);P_SPINP(f),S_FLIGHT::S(F)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • Q(B);N_PINP(c)
    • Threat
      • QAB1(B)
    • Vars
      • K(g);P_SPINP(f),P_SPINR(e),S_FLIGHT::S(F)
      • R(d);N_GUARD::S(E),XR(d)
      • R(e);::P(C)
      • P(h);::QAB1(B),XP(h)
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