MESON Chess Problem Database

Problem Display
PID: 203646 (8/7N/3pp3/4kp2/3p1RB1/6n1/2P1p2B/2Q1K2n w - - 0 1)

Varga, Laszlo

Uj Nemezdek, 1924

8/7N/3pp3/4kp2/3p1RB1/6n1/2P1p2B/2Q1K2n

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Rxf5#
  • Tries
    • 1.Rxd4?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...fxg4
        • 2.Qf4#
      • 1...d5
        • 2.Qf4#
      • 1...Sf2
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...Kxd4!
    • 1.Rxf5+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Sf6#
        • 2.Qf4#
      • 1...exf5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qxd4#
      • 1...Kxf4
        • 2.Qxd4#
      • 1...Kd5
        • 2.Qb5#
      • 1...Se4
        • 2.Rxf5#
      • 1...d5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(D)+R(E),DCHECK,XP(f)
  • Tries
    • Try
      • R(E);P_PINS(c),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XB(F)::QAB1(A)
        • P(g);::QAB1(A)
        • S(a);::QAB1(A)
        • P(f);N_SPINS(c)::QAB1(A),XP(f)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK,P_PINS(c),XP(f)
      • Refutation
        • P(h);XR(E)
  • Actual
    • Q(A);P_PINP(d)
    • Threat
      • QAB1(A),XP(d)
    • Vars
      • K(e);N_SPINP(d),P_SPINS(c),S_FLIGHT,XR(E)::QAR2(A),XP(d)
      • K(e);N_SPINP(d),P-FLIGHT::QAR2(A)
      • S(c);SBLOCK::B(D)+R(E),DCHECK,XP(f)
      • P(g);OGATEB,SBLOCK::QAB(A)
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