MESON Chess Problem Database

Problem Display
PID: 83679 (1B4b1/6r1/B3P3/K1P5/2pkNN1R/3ppQ2/1P2P3/3R2r1 w - - 0 1)

Ellerman, Arnoldo

Arguelles JT, 1963

1B4b1/6r1/B3P3/K1P5/2pkNN1R/3ppQ2/1P2P3/3R2r1

#2

12 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Rxd3#
      • 2.bxc3#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qd5#
      • 1...Kxc5
        • 2.Qd5#
      • 1...Bxe6
        • 2.Sxe6#
      • 1...Rd7
        • 2.Sxd3#
      • 1...Rg5!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Se1#
      • 1...Kd5
        • 2.Sg5#
      • 1...Rxd1
        • 2.Sg5#
      • 1...cxd3
        • 2.Rxd3#
      • 1...Re1
        • 2.Sxe1#
        • 2.Sg5#
      • 1...Rc7
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(D)
      • Vars
        • K(e);N_SPINP(b),S_FLIGHT,XP(I)::QAR1(D)
        • B(g);XP(K)::R(G)+S(F),DCHECK,XB(g)
        • R(f);N_GUARD::R(G)+S(F),XP(b)
      • Refutation
        • R(f);P_PINP(I)
  • Actual
    • S(F);XP(b)
    • Threat
      • R(A)+S(F)
    • Vars
      • K(e);P-FLIGHT::QAB(D)+S(E)
      • R(a);N_GUARD,XR(A)::R(G)+S(E)
      • P(d);OGATE,P_SPINP(d),XS(F)::R1(A),XP(d)
      • R(f);N_GUARD::R(G)+S(E)
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