MESON Chess Problem Database

Problem Display
PID: 189572 (2Nb4/3bP3/N5RK/np1k4/p4P2/4Pr2/6Q1/1B2n3 w - - 0 1)

Hirsch, Hugo

Pesti Naplo, 1911

2Nb4/3bP3/N5RK/np1k4/p4P2/4Pr2/6Q1/1B2n3

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bxe7
      • 2.Sb6#
    • 1...Sc6
      • 2.Qa2#
    • 1...Sb7
      • 2.Qa2#
  • Tries
    • 1.Qa2+?
      • 1...Sc4
        • 2.Rd6#
      • 1...Sb3!
    • 1.Qd2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kc4!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Be4#
      • 1...Bxc6
        • 2.Qg8#
      • 1...Bxe7
        • 2.Sxe7#
      • 1...Sxc6
        • 2.Qa2#
      • 1...Sc2
        • 2.Qxf3#
      • 1...Sd3
        • 2.Qxf3#
      • 1...b4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::S(I),XB(h)
    • B(h);N_GUARD,XP(H)::S(I)
    • S(d);N_GUARD::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Vars
        • S(d);P_SPINS(d)::R1(F)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(B),XS(a)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • S(E)
    • Vars
      • K(f);S_FLIGHT,XR(F)::B(A)
      • B(g);N_GUARD,SBLOCK,XR(F)::QAB(B)
      • B(h);XP(H)::S(I),XB(h)
      • S(d);N_GUARD,SBLOCK,XR(F)::QAB(B)
      • S(a);N_GUARD::QAB(B),XR(b)
      • P(e);::S(E),XP(e)
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