MESON Chess Problem Database

Problem Display
PID: 156070 (1N6/8/1P1R4/pk2n3/n6R/2P5/1P2N3/1QKb2B1 w - - 0 1)

Meurs, Abraham

Nederlandse Bond van Probleemvrienden, 1932

1N6/8/1P1R4/pk2n3/n6R/2P5/1P2N3/1QKb2B1

#2

10 + 5

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb2
      • 2.Rd5#
    • 1...Sxc3
      • 2.Sxc3#
    • 1...Sxb6
      • 2.Rxb6#
    • 1...Sd3+
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
    • 1...Sg4
      • 2.Qd3#
    • 1...Sc6
      • 2.Qd3#
    • 1...Sg6
      • 2.Qd3#
    • 1...Sd7
      • 2.Qd3#
    • 1...Sf7
      • 2.Qd3#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Sc7#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qd3#
      • 1...Kxa6!
    • 1.Qd3+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sxd3+!
  • Keys
    • 1.b3!
      • threat
        • 2.bxa4#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Bxb3
        • 2.Qxb3#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxb6
        • 2.Rxb6#
      • 1...Sb2
        • 2.Rd5#
      • 1...Sc5
        • 2.Sd4#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sg4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD,P_SPINS(b),XP(D)::R(I)
    • S(b);XP(F)::S(E),XS(b)
    • S(b);OGATE,XP(H)::R1(I),XS(b)
    • S(e);CHECK,N_GUARD::QAB(A),XS(e)
    • S(e);N_GUARD::QAB(A)
  • Tries
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • S(e);CHECK,N_GUARD::QAB(A),XS(e)
        • S(e);N_GUARD::QAB(A)
      • Refutation
        • K(d);S_FLIGHT,XS(J)
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB1(A),XS(e)
      • Refutation
        • S(e);CHECK,XQ(A)
  • Actual
    • P(D);
    • Threat
      • QAR(A)+P(D)DCHECK,XS(b)
    • Vars
      • S(e);CHECK,N_GUARD::QAB(A),XS(e)
      • B(a);OGATE,P_SPINB(a),XP(D)::QAR2(A),XB(a)
      • S(b);XP(F)::S(E),XS(b)
      • S(b);OGATE,XP(H)::R1(I),XS(b)
      • S(b);N_GUARD::R(I)
      • S(b);SBLOCK::S(E)
      • S(e);OGATE::QAR(A)+P(D)DCHECK,XS(e)
      • S(e);N_GUARD::QAB(A)
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