MESON Chess Problem Database

Problem Display
PID: 63657 (1nR5/pQ6/p1bP1P1n/2k5/r1Np1K2/1PN1p3/1PPR4/2b3B1 w - - 0 1)

Visserman, Eeltje

3rd Prize, Magyar Sakkszovetseg, 1974

1nR5/pQ6/p1bP1P1n/2k5/r1Np1K2/1PN1p3/1PPR4/2b3B1

#2

12 + 10

3771 FIDE Album (1974-1976) 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Sd7
      • 2.Rxc6#
    • 1...e2
      • 2.Bxd4#
    • 1...dxc3
      • 2.Bxe3#
    • 1...d3
      • 2.Bxe3#
    • 1...a5
      • 2.Qb5#
  • Tries
    • 1.Rxd4?
      • threat
        • 2.Rd5#
      • 1...e2+
        • 2.Rd2#
      • 1...Kxd4
        • 2.Qxa7#
      • 1...Rxc4!
    • 1.Qxc6+?
      • 1...Kb4
        • 2.Sd5#
        • 2.Rxb8#
        • 2.Qxa4#
        • 2.Qb7#
        • 2.Qc5#
      • 1...Sxc6!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Se4#
      • 1...dxc3+
        • 2.Sc4#
      • 1...dxe3+
        • 2.Sxa4#
      • 1...d3+
        • 2.Sc4#
      • 1...Kxd6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(j);N_GUARD::R1(L),XB(g)
    • P(b);OGATE,P_PINR(D),P_SPINP(d)::B(A),XP(d)
    • P(d);OGATEB,P_PINS(G),P_SPINP(b),XS(F)::B(A),XP(b)
    • P(d);OGATEB,P_PINS(G),P_SPINP(b)::B(A),XP(b)
    • P(f);N_GUARD::QAR1(K)
  • Tries
    • Try
      • R(D);XP(d)
      • Threat
        • R1(D)
      • Vars
        • P(b);CHECK,OGATEB::B(A)+R(D)
        • K(e);N_SPINB(g),P_SPINP(b),S_FLIGHT,XR(D)::QAB(K),XP(i)
      • Refutation
        • R(c);P_PINR(D),XS(G)
    • Try
      • Q(K);CHECK,XB(g)
      • Refutation
        • S(j);P_SPINS(j),XQ(K)
  • Actual
    • S(G);XP(b)
    • Threat
      • S(F)
    • Vars
      • P(d);CHECK,XS(F)::B(A)+S(G)
      • P(d);CHECK,P_SPINP(d),XS(G)::S(F),XR(c)
      • P(d);CHECK::B(A)+S(G)
      • K(e);N_SPINB(g),OGATEB,P_SPINP(d),S_FLIGHT,XP(I)::QAB1(K)
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