MESON Chess Problem Database

Problem Display
PID: 99165 (1r5k/1P6/rB4R1/pPpR2N1/Q2N4/8/b6K/8 w - - 0 1)

Haring, Jacobus

Magyar Sakkelet, 1983

1r5k/1P6/rB4R1/pPpR2N1/Q2N4/8/b6K/8

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.bxc8Q#
      • 2.bxc8R#
    • 1...cxd4
      • 2.Qxd4#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qh4#
      • 1...Rxb7
        • 2.Rd8#
      • 1...c4!
    • 1.Sc6?
      • threat
        • 2.Qh4#
      • 1...c4
        • 2.Bd4#
      • 1...Bc4
        • 2.Qa1#
      • 1...Rxb7!
    • 1.Rd8+?
      • 1...Bg8
        • 2.Rgxg8#
      • 1...Rxd8!
    • 1.Qb3?
      • threat
        • 2.Qh3#
      • 1...Rxb7
        • 2.Rd8#
      • 1...Bxb3!
  • Keys
    • 1.Sde6!
      • threat
        • 2.Qh4#
      • 1...Rxb7
        • 2.Rd8#
      • 1...c4
        • 2.Bd4#
      • 1...Bc4
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);OGATE::PXR(e)=Q
    • P(c);OGATE,XS(C)::QAB(B),XP(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR(B)
      • Vars
        • R(e);N_GUARD,XP(I)::R(E)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Threat
        • QAR(B)
      • Vars
        • P(c);OGATE::B(G)
        • B(a);OGATE::QAB(B)
      • Refutation
        • R(e);XP(I)
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R1(H),XB(a)
      • Refutation
        • R(e);XR(E)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • R(e);N_GUARD,XP(I)::R(E)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • S(C);
    • Threat
      • QAR(B)
    • Vars
      • R(e);N_GUARD,XP(I)::R(E)
      • P(c);OGATE::B(G)
      • B(a);OGATE::QAB(B)
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