MESON Chess Problem Database

Problem Display
PID: 86683 (B2N4/1r1p4/2rp4/n1Nkp3/4R3/3P4/8/6QK w - - 0 1)

Gross, Erwin

Dunaujvarosi Hirlap, 1962-1964

B2N4/1r1p4/2rp4/n1Nkp3/4R3/3P4/8/6QK

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Qg8#
    • 1...Sc4
      • 2.dxc4#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Qg8#
      • 1...Rc1
        • 2.Sb4#
      • 1...Rb1
        • 2.Sc7#
      • 1...Rxa6!
    • 1.Sxd7?
      • threat
        • 2.Sf6#
        • 2.Qg8#
      • 1...Rc1
        • 2.Sb6#
        • 2.Sf6#
      • 1...Rb1
        • 2.Sf6#
      • 1...Rxd7!
    • 1.Rd4+?
      • 1...exd4
        • 2.Qg5#
      • 1...Kxc5!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Qg8#
      • 1...Rc1
        • 2.Sb6#
      • 1...Rb1
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(d);P_SPINR(f),SBLOCK,XS(E)::QAB(A)
    • S(a);OGATE::P(C),XS(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB(A)
      • Vars
        • R(d);P_PINQ(A),P_SPINR(f)::S(E)
        • R(f);N_GUARD,P_PINQ(A),P_SPINR(d)::S(E)
      • Refutation
        • R(d);P_SPINR(f),XS(E)
    • Try
      • S(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);P_PINQ(A),P_SPINR(d)::S(E)
      • Refutation
        • R(f);P_SPINR(d),XS(E)
    • Try
      • R(D);CHECK
      • Vars
        • P(c);SBLOCK,XR(D)::QAR(A)
      • Refutation
        • K(b);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Threat
      • QAB(A)
    • Vars
      • R(d);N_GUARD,P_PINQ(A),P_SPINR(f)::S(E)
      • R(f);P_PINQ(A),P_SPINR(d)::S(E)
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