MESON Chess Problem Database

Problem Display
PID: 190196 (3QN3/4K3/2p5/2k1p1n1/2pR4/2Rpb1N1/4p1r1/4n1q1 w - - 0 1)

von Sponer, Gyorgy Janos Andor

Pesti Naplo, 1913

3QN3/4K3/2p5/2k1p1n1/2pR4/2Rpb1N1/4p1r1/4n1q1

#2

6 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qa5#
    • 1...exd4
      • 2.Qa5#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qb6#
        • 2.Qd6#
      • 1...Bxd4
        • 2.Qa5#
        • 2.Qd6#
      • 1...exd4
        • 2.Qa5#
        • 2.Qd6#
      • 1...Se4
        • 2.Sxe4#
        • 2.Qb6#
      • 1...Sf7
        • 2.Se4#
        • 2.Qb6#
      • 1...cxb3!
    • 1.Rd5+?
      • 1...Kb4
        • 2.Qa5#
      • 1...cxd5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rcxc4#
      • 1...Kb4
        • 2.Rdxc4#
      • 1...Kxd4
        • 2.Sde4#
      • 1...Bxd4
        • 2.Qa5#
      • 1...exd4
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK,XR(C)::QAR2(E)
    • P(i);SBLOCK,XR(C)::QAR2(E)
  • Tries
    • Try
      • R(A);N_PINP(g)
      • Threat
        • DUALS(2)
      • Refutation
        • P(g);XR(A)
    • Try
      • R(C);CHECK
      • Vars
        • K(h);N_SPINP(g),S_FLIGHT::QAB1(E)
      • Refutation
        • P(k);XR(C)
  • Actual
    • S(F);
    • Threat
      • R1(A),XP(g)
    • Vars
      • K(h);S_FLIGHT::R1(C),XP(g)
      • K(h);N_SPINP(g),S_FLIGHT,XR(C)::QAR(E)+S(F)
      • B(f);SBLOCK,XR(C)::QAR2(E)
      • P(i);SBLOCK,XR(C)::QAR2(E)
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