MESON Chess Problem Database

Problem Display
PID: 183174 (8/2K2p2/2N1kP2/8/2P2rp1/5pN1/2Q2P2/8 w - - 0 1)

Havasi, Kornel

Magyar Sakklap, 1907

8/2K2p2/2N1kP2/8/2P2rp1/5pN1/2Q2P2/8

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qf5#
    • 1...Rd4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rxf6
      • 2.Qe4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qd6#
      • 1...Rd4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Qg6?
      • 1...Rxc4
        • 2.Qf5#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf5#
      • 1...Re4
        • 2.Qf5#
      • 1...Rf5
        • 2.Qxf5#
      • 1...fxg6!
    • 1.Qb2?
      • threat
        • 2.Sd8#
        • 2.Qe5#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Rxf6
        • 2.Qe5#
      • 1...Re4
        • 2.Sd8#
      • 1...Rf5
        • 2.Sd8#
      • 1...Rd4!
    • 1.Qc3?
      • threat
        • 2.Sd8#
        • 2.Qe5#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Rxf6
        • 2.Qe1#
        • 2.Qe5#
        • 2.Qe3#
      • 1...Re4
        • 2.Sd8#
      • 1...Rf5
        • 2.Sd8#
      • 1...Rd4!
  • Keys
    • 1.Qh7!
      • 1...Kxf6
        • 2.Qh6#
      • 1...Rxc4
        • 2.Qf5#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf5#
      • 1...Re4
        • 2.Qf5#
      • 1...Rf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,P_PINS(E),XP(D)::QAB1(A)
    • R(b);N_GUARD::QAB1(A)
    • R(b);N_GUARD::QAB1(A),XR(b)
    • R(b);N_GUARD,SBLOCK,XP(F)::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(b);N_GUARD::QAB1(A)
      • Refutation
        • K(d);P-FLIGHT,XP(F)
    • Try
      • Q(A);
      • Vars
        • R(b);N_GUARD,P_PINS(E),XP(D)::QAB1(A)
        • R(b);N_GUARD,P_SPINR(b),SBLOCK,XP(F)::QAR2(A)
        • R(b);N_GUARD::QAB1(A)
        • R(b);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);P_PINS(E),XP(D)::QAR1(A)
        • R(b);XP(F)::QAR1(A)
        • R(b);::S(E)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);P_PINS(E),XP(D)::QAR1(A)
        • R(b);::S(E)
      • Refutation
        • R(b);
  • Actual
    • Q(A);
    • Vars
      • K(d);OGATEB,P-FLIGHT,XP(F)::QAR2(A)
      • R(b);N_GUARD,P_PINS(E),XP(D)::QAB1(A)
      • R(b);N_GUARD,SBLOCK,XP(F)::QAR2(A)
      • R(b);N_GUARD::QAB1(A)
      • R(b);N_GUARD::QAB1(A),XR(b)
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