MESON Chess Problem Database

Problem Display
PID: 225513 (Q7/1p6/2nP4/1NRb2K1/1b2kP2/1p5R/8/1n6 w - - 0 1)

Hernitz, Zvonimir

Praca, 1958

Q7/1p6/2nP4/1NRb2K1/1b2kP2/1p5R/8/1n6

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Bxc4!
    • 1.Qa1?
      • threat
        • 2.Qxb1#
      • 1...Sd2
        • 2.Qe1#
      • 1...Sa3
        • 2.Qh1#
      • 1...Sc3
        • 2.Qh1#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se5
        • 2.Qd4#
        • 2.Qxe5#
      • 1...Bc4!
  • Keys
    • 1.Qxb7!
      • threat
        • 2.Qh7#
      • 1...Be6
        • 2.Re5#
      • 1...Bf7
        • 2.Re5#
      • 1...Bg8
        • 2.Re5#
      • 1...Sd4
        • 2.Qxd5#
      • 1...Se5
        • 2.Qxd5#
      • 1...Se7
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::R1(D),XS(f)
      • Refutation
        • B(e);XR(D)
    • Try
      • Q(G);
      • Threat
        • QAB(G),XS(a)
      • Vars
        • S(a);OGATE::QAR(G)
        • S(a);OGATE::QAB(G)
        • S(f);N_GUARD::QAR1(G),XS(f)
      • Refutation
        • B(e);
  • Actual
    • Q(G);XP(g)
    • Threat
      • QAB(G)
    • Vars
      • B(e);OGATE,P_SPINS(f)::R1(D)
      • S(f);OGATE,P_SPINB(e)::QAB1(G),XB(e)
      • S(f);N_GUARD,P_SPINB(e)::R(D)
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