MESON Chess Problem Database

Problem Display
PID: 227653 (8/3pQ3/1p2b2p/1Rppk2p/4pR1K/7P/3PNN2/5BB1 w - - 0 1)

Ferenczi, Istvan

Nepszava, 1926

8/3pQ3/1p2b2p/1Rppk2p/4pR1K/7P/3PNN2/5BB1

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Sd3#
    • 1...d6
      • 2.Qf6#
      • 2.Qg7#
  • Tries
    • 1.Sg3?
      • 1...Kd4
        • 2.Sg4#
        • 2.Qf6#
        • 2.Qg7#
      • 1...c4
        • 2.Rxe4#
      • 1...e3
        • 2.Sd3#
      • 1...d4
        • 2.Rf5#
      • 1...d6
        • 2.Qf6#
      • 1...Kxf4!
    • 1.Sd4?
      • 1...Kxd4
        • 2.Sg4#
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kxf4
        • 2.Bh2#
        • 2.Qd6#
      • 1...c4
        • 2.Rxe4#
      • 1...e3
        • 2.Sd3#
      • 1...d6
        • 2.Qf6#
      • 1...cxd4!
    • 1.Sxe4?
      • threat
        • 2.Qd6#
        • 2.Qf6#
        • 2.Qg7#
      • 1...d4
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
        • 2.Qf6#
        • 2.Qg7#
      • 1...dxe4!
    • 1.d4+?
      • 1...exd4 ep
        • 2.Sxd3#
      • 1...cxd4!
  • Keys
    • 1.Rxb6!
      • threat
        • 2.Qd6#
        • 2.Qf6#
        • 2.Qg7#
      • 1...d4
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
        • 2.Qf6#
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);N_GUARD::S(E)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(b);P_SPINP(c)::R1(G),XP(a)
        • P(a);N_GUARD::S(E)
        • P(c);P_SPINP(b),SBLOCK::R1(G)
        • P(i);SBLOCK::QAB1(J)
      • Refutation
        • K(d);N_SPINB(g),S_FLIGHT,XR(G)
    • Try
      • S(D);
      • Vars
        • P(b);P_SPINP(c)::R1(G),XP(a)
        • P(a);N_GUARD::S(E)
        • P(i);SBLOCK::QAB1(J)
      • Refutation
        • P(b);P_SPINP(c),XS(D)
    • Try
      • S(E);XP(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);P_SPINP(b)::QAB1(J)
      • Refutation
        • P(c);P_SPINP(b),XS(E)
    • Try
      • P(C);CHECK
      • Vars
        • P(a);EP,XP(C)::S(E),XP(a)
      • Refutation
        • P(b);P_SPINP(c),XP(C)
  • Actual
    • R(I);XP(f)
    • Threat
      • DUALS(3)
    • Vars
      • P(c);::QAB1(J)
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