MESON Chess Problem Database

Problem Display
PID: 177526 (3KN3/8/2p3P1/1prkpp1R/1P1b2R1/P1p3BB/2P3N1/3Q4 w - - 0 1)

Pitkanen, Jorma

Best Problems, 2018

3KN3/8/2p3P1/1prkpp1R/1P1b2R1/P1p3BB/2P3N1/3Q4

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
  • Tries
    • 1.Sf4+?
      • 1...Kc4
        • 2.Sd6#
        • 2.Bf1#
        • 2.Qe2#
        • 2.Qf1#
        • 2.Qd3#
      • 1...Ke4
        • 2.Qd3#
      • 1...exf4!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Se3#
        • 2.Qe2#
        • 2.Qf1#
        • 2.Qd3#
      • 1...Kd6!
    • 1.Rxd4+?
      • 1...Ke6
        • 2.Bxf5#
        • 2.Rd6#
      • 1...exd4!
    • 1.Rxf5?
      • 1...Kc4
        • 2.Se3#
      • 1...Rc4
        • 2.Rxe5#
      • 1...Ke6!
    • 1.Qxd4+?
      • 1...Ke6
        • 2.Qd6#
        • 2.Qd7#
      • 1...exd4!
  • Keys
    • 1.Re4!
      • 1...Kc4
        • 2.Se3#
      • 1...Kxe4
        • 2.Sf6#
      • 1...Ke6
        • 2.Sf4#
      • 1...fxe4
        • 2.Se3#
      • 1...Rc4
        • 2.Rxe5#
      • 1...f4
        • 2.Rxd4#
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);N_SPINB(b),S_FLIGHT::QAB1(A)
      • Refutation
        • P(f);P_SPINP(g),XS(C)
    • Try
      • S(L);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(f)
    • Try
      • R(H);CHECK,XB(b)
      • Refutation
        • P(f);P_SPINP(f),XR(H)
    • Try
      • R(I);P_PINP(f),XP(g)
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::S(C)
        • R(d);SBLOCK::R1(I),XP(f)
      • Refutation
        • K(e);N_SPINB(b),N_SPINP(f),S_FLIGHT
    • Try
      • Q(A);CHECK,XB(b)
      • Refutation
        • P(f);P_SPINP(g),XQ(A)
  • Actual
    • R(H);
    • Vars
      • K(e);S_FLIGHT::S(C)
      • K(e);N_SPINB(b),S_FLIGHT,XR(H)::S(L)
      • K(e);N_SPINB(b),P_SPINP(f),S_FLIGHT::S(C)
      • P(g);P_SPINP(f),SBLOCK,XR(H)::S(C)
      • R(d);SBLOCK::R1(H),XP(f)
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