MESON Chess Problem Database

Problem Display
PID: 53228 (2BR1Nb1/Bp4Q1/r2p3K/nPPkPp2/1p6/3Pp3/2N5/1r4b1 w - - 0 1)

Ellerman, Arnoldo

White MT Award, 1952-1953

2BR1Nb1/Bp4Q1/r2p3K/nPPkPp2/1p6/3Pp3/2N5/1r4b1

#2

11 + 11

268 Chess Life 1955

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Bxe6#
    • 1...Bh7
      • 2.Be6#
    • 1...Sc6
      • 2.Rxd6#
  • Tries
    • 1.Sxb4+?
      • 1...Kd4
        • 2.exd6#
        • 2.e6#
      • 1...Rxb4!
    • 1.Bb6?
      • threat
        • 2.Rxd6#
      • 1...Sc4
        • 2.Bxb7#
      • 1...Rxb6!
    • 1.Bxb7+?
      • 1...Rc6
        • 2.Rxd6#
      • 1...Sc6
        • 2.Rxd6#
      • 1...Sxb7!
    • 1.Qf7+?
      • 1...Kxe5
        • 2.Sg6#
        • 2.Qxf5#
      • 1...Bxf7!
    • 1.e6?
      • threat
        • 2.Qd4#
      • 1...Sb3
        • 2.Sxb4#
      • 1...Sc6
        • 2.Rxd6#
      • 1...e2!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qxg8#
      • 1...dxc5+
        • 2.Sb6#
      • 1...dxe5+
        • 2.Sf6#
      • 1...Ke6
        • 2.Sb6#
      • 1...Be6
        • 2.Qg2#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(k);N_GUARD::B(I),XB(k)
    • B(k);N_GUARD::B(I)
    • S(e);S_CUTR(h)::R1(J),XP(i)
  • Tries
    • Try
      • S(A);CHECK,XP(d)
      • Refutation
        • R(a);XS(A)
    • Try
      • B(G);
      • Threat
        • R1(J),XP(i)
      • Vars
        • S(e);N_GUARD::B(I),XP(j)
      • Refutation
        • R(h);XB(G)
    • Try
      • B(I);CHECK,XP(j)
      • Vars
        • R(h);P_SPINR(h)::R1(J),XP(i)
        • S(e);P_SPINS(e)::R1(J),XP(i)
      • Refutation
        • S(e);XB(I)
    • Try
      • Q(H);CHECK
      • Refutation
        • B(k);XQ(H)
    • Try
      • P(E);
      • Threat
        • QAR1(H)
      • Vars
        • S(e);S_CUTR(a)::S(A),XP(d)
        • S(e);S_CUTR(h)::R1(J),XP(i)
      • Refutation
        • P(c);
  • Actual
    • S(K);N_PINP(i)
    • Threat
      • QAB(H),XB(k)
    • Vars
      • P(i);CHECK,SBLOCK,XP(D)::R(J)+S(K),DCHECK
      • P(i);CHECK,SBLOCK,XP(E)::R(J)+S(K),DCHECK
      • K(f);S_FLIGHT::B(I)+S(K)
      • B(k);SBLOCK::QAB(H)
      • B(k);N_GUARD::QAB(H),XB(k)
      • B(k);N_GUARD::QAB(H)
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