MESON Chess Problem Database

Problem Display
PID: 141474 (2K2n2/1RB1p1n1/B1P1p1r1/2R1b1q1/2N1k1b1/2Q1ppp1/2N2r2/8 w - - 0 1)

Haring, Jacobus

Probleemblad, 1976

2K2n2/1RB1p1n1/B1P1p1r1/2R1b1q1/2N1k1b1/2Q1ppp1/2N2r2/8

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe5#
    • 1...Qf5
      • 2.Qxe3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bf4
      • 2.Qd4#
    • 1...Bd6
      • 2.Qd4#
    • 1...Bxc7
      • 2.Qd4#
  • Tries
    • 1.Sd6+?
      • 1...Kf4
        • 2.Qxe3#
      • 1...Bxd6
        • 2.Rb4#
        • 2.Qb4#
        • 2.Qd4#
        • 2.Qc4#
      • 1...exd6!
    • 1.Rxe5+?
      • 1...Kf4
        • 2.Qd4#
        • 2.Qxe3#
      • 1...Qxe5!
    • 1.Qd4+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...Bxd4!
    • 1.Qxe3+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...Qxe3!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sd6#
      • 1...Kf4
        • 2.S4xe3#
      • 1...Kf5
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bd6
        • 2.Sb2#
        • 2.Sd2#
        • 2.S4a3#
        • 2.S4xe3#
        • 2.Sa5#
        • 2.Sb6#
        • 2.Sxd6#
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • K(e);P_SPINB(g),S_FLIGHT::QAR1(B),XB(g)
    • Q(h);N_GUARD,SBLOCK::QAR1(B),XP(b)
    • B(g);N_GUARD::QAR1(B),XB(g)
    • B(g);N_GUARD::QAR1(B)
    • B(g);N_GUARD,XB(H)::QAR1(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB1(B),XP(b)
      • Refutation
        • P(k);XS(C)
    • Try
      • R(D);CHECK,XB(g)
      • Refutation
        • Q(h);XR(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);P_SPINB(g),S_FLIGHT::QAR1(B),XB(g)
      • Refutation
        • B(g);XQ(B)
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • K(e);OGATE,P_SPINB(g),S_FLIGHT::QAR1(B),XB(g)
      • Refutation
        • Q(h);XQ(B)
  • Actual
    • R(G);
    • Threat
      • R(G)+S(C),DCHECK
    • Vars
      • K(e);P-FLIGHT,P_SPINB(g)::R(G)+S(C),XP(b)
      • K(e);P_SPINB(g),S_FLIGHT::QAR1(B),XB(g)
      • B(g);N_GUARD::QAR1(B),XB(g)
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