MESON Chess Problem Database

Problem Display
PID: 194083 (2Q4b/8/2PP4/q2kn2R/1pR1pP2/pB2P1B1/8/K7 w - - 0 1)

Rietveld, Johannes Jacob

2nd HM., Algemeen Handelsblad, 1917

2Q4b/8/2PP4/q2kn2R/1pR1pP2/pB2P1B1/8/K7

#2

10 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rd4#
  • Tries
    • 1.Rxe5+?
      • 1...Kxd6
        • 2.Qd7#
      • 1...Bxe5+!
    • 1.fxe5?
      • threat
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Qg8#
      • 1...Qc7
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
      • 1...Qd8
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
      • 1...Qa4
        • 2.Qg8#
      • 1...Qb5
        • 2.Qg8#
      • 1...Qc5
        • 2.Rd4#
      • 1...Qa6
        • 2.Qg8#
      • 1...Qa7
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
      • 1...Qa8
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
      • 1...Bxe5+!
  • Keys
    • 1.f5!
      • threat
        • 2.Qe6#
      • 1...Sd3+
        • 2.Rc3#
      • 1...Sf3+
        • 2.Rc3#
      • 1...Sxc4+
        • 2.f6#
      • 1...Sg4+
        • 2.Rc3#
      • 1...Sxc6+
        • 2.Rc3#
      • 1...Sg6+
        • 2.Rc3#
      • 1...Sd7+
        • 2.Rc3#
      • 1...Sf7+
        • 2.Rc3#
      • 1...Kxd6
        • 2.Qd7#
      • 1...Qc5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • Q(d);SBLOCK::B(B)+R(E),DCHECK
  • Tries
    • Try
      • R(G);CHECK,P_SPINR(G),XS(f)
      • Vars
        • K(e);P-FLIGHT,XP(I)::QAR1(J)
      • Refutation
        • B(g);CHECK,XR(G)
    • Try
      • P(F);P_SPINP(F),XS(f)
      • Threat
        • DUALS(4)
      • Vars
        • Q(d);::QAB(J)
        • Q(d);SBLOCK::B(B)+R(E),DCHECK
      • Refutation
        • B(g);CHECK,P_SPINB(g),XP(F)
  • Actual
    • P(F);N_PINS(f)
    • Threat
      • QAB1(J)
    • Vars
      • S(f);CHECK,N_GUARD::B(B)+R(E)
      • S(f);CHECK,P_SPINS(f),XR(E)::R(G)+P(F)
      • S(f);CHECK,N_GUARD,XP(H)::B(B)+R(E)
      • K(e);OGATEB,P-FLIGHT,P_SPINS(f),XP(I)::QAR1(J)
      • Q(d);SBLOCK::B(B)+R(E),DCHECK
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