MESON Chess Problem Database

Problem Display
PID: 17049 (8/2p2Q2/6p1/4Bn1B/K1N2Nr1/1R2pk2/4R1p1/5brn w - - 0 1)

Hassberg, Eric Manfred

To Alain White, 1945

8/2p2Q2/6p1/4Bn1B/K1N2Nr1/1R2pk2/4R1p1/5brn

#2

8 + 10

788 US Problem Bulletin 1963
102 Probleemblad 1977
145 StrateGems 1998
56 The Problemist 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd5#
    • 1...Shg3
      • 2.Sd2#
    • 1...Sfg3
      • 2.Sd2#
      • 2.Rbxe3#
    • 1...Sd4
      • 2.Rbxe3#
    • 1...Sh4
      • 2.Rbxe3#
    • 1...Sd6
      • 2.Rbxe3#
    • 1...Sh6
      • 2.Rbxe3#
    • 1...Se7
      • 2.Rbxe3#
    • 1...Sg7
      • 2.Rbxe3#
  • Tries
    • 1.Sxg6?
      • threat
        • 2.Rbxe3#
      • 1...Ke4
        • 2.Sd2#
      • 1...Bxe2
        • 2.Qxf5#
      • 1...Kxe2!
    • 1.Rexe3+?
      • 1...Kf2
        • 2.Sh3#
      • 1...Sxe3!
    • 1.Qxf5?
      • threat
        • 2.Rbxe3#
      • 1...Bxe2
        • 2.Sxg6#
      • 1...Kg3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Rxe3#
      • 1...Kxe2
        • 2.Bxg4#
      • 1...Ke4
        • 2.Sd2#
      • 1...Bxe2
        • 2.Qd5#

This is a version

There are these versions: 169846

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • K(f);N_SPINR(g),S_FLIGHT::QAB1(H)
    • S(c);SBLOCK::S(D)
    • S(h);N_GUARD::R1(B),XP(e)
  • Tries
    • Try
      • S(E);P_PINS(h),P_SPINS(D),XP(i)
      • Threat
        • R1(B),XP(e)
      • Vars
        • K(f);N_PINS(D),N_SPINR(g),N_SPINS(h),S_FLIGHT::S(D)
        • B(a);SBLOCK,XR(A)::QAR2(H),XS(h)
      • Refutation
        • K(f);N_SPINP(e),N_SPINS(h),S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK,XP(e)
      • Vars
        • K(f);N_SPINR(g),P-FLIGHT::S(E)
      • Refutation
        • S(h);P_SPINS(h),XR(A)
    • Try
      • Q(H);XS(h)
      • Threat
        • R1(B),XP(e)
      • Vars
        • B(a);SBLOCK,XR(A)::QAR(H)+S(E),XP(i)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT
  • Actual
    • S(E);N_PINP(e),P_PINS(h),P_SPINS(D)
    • Threat
      • R1(A),XP(e)
    • Vars
      • K(f);N_SPINS(h),S_FLIGHT,XR(A)::B(G),XR(g)
      • K(f);N_PINS(D),N_SPINR(g),N_SPINS(h),P_SPINP(e),S_FLIGHT::S(D)
      • B(a);SBLOCK,XR(A)::QAB(H)
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