MESON Chess Problem Database

Problem Display
PID: 246645 (2B5/2n5/3P4/P2k3p/K6b/BN2pP2/2N3Qr/2R5 w - - 0 1)

Hermanson, Halvar

2nd Prize, El Ajedrez Espanol, 1959

2B5/2n5/3P4/P2k3p/K6b/BN2pP2/2N3Qr/2R5

#2

10 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb4#
    • 1...Kc6
      • 2.Sxe3#
  • Tries
    • 1.Qxh2?
      • threat
        • 2.Sxe3#
        • 2.Sb4#
      • 1...Kc4
        • 2.Sb4#
      • 1...Kc6
        • 2.Sxe3#
        • 2.Sb4#
      • 1...Be1
        • 2.Sxe3#
      • 1...Bf2
        • 2.Sb4#
      • 1...Bg5
        • 2.Sb4#
      • 1...Sa6
        • 2.Sxe3#
      • 1...e2
        • 2.Se3#
        • 2.Sb4#
      • 1...Bg3!
    • 1.Qg4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qf5#
        • 2.Qd4#
      • 1...Kc6
        • 2.Qc4#
      • 1...hxg4!
    • 1.f4+?
      • 1...Kc4
        • 2.Se1#
        • 2.Sb4#
      • 1...Rxg2!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Sxe3#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::R(A)+S(B)
    • K(d);S_FLIGHT::R(A)+S(B),XP(b)
  • Tries
    • Try
      • Q(C);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::R(A)+S(B)
        • B(c);::S(B),XP(b)
        • B(c);::S(B)
        • S(f);::S(B),XP(b)
      • Refutation
        • B(c);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);S_FLIGHT::QAR2(C)
      • Refutation
        • P(e);XQ(C)
    • Try
      • P(F);CHECK
      • Refutation
        • R(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);S_FLIGHT::R(A)+S(B),DCHECK,XP(b)
      • K(d);P-FLIGHT::QAR1(C)
      • K(d);S_FLIGHT::R(A)+S(B),DCHECK
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