MESON Chess Problem Database

Problem Display
PID: 158184 (2R1QN2/nrr2p1K/1p4p1/2kpP3/B1P4b/2P1n2b/3N4/8 w - - 0 1)

Bachl, Ernst

Die Schwalbe, 1952

2R1QN2/nrr2p1K/1p4p1/2kpP3/B1P4b/2P1n2b/3N4/8

#2

9 + 11

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sd7#
    • 1...Bg2
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Be1
      • 2.Qe7#
    • 1...Bf2
      • 2.Qe7#
    • 1...Bg3
      • 2.Qe7#
    • 1...Be7
      • 2.Qxe7#
    • 1...Sxc4
      • 2.Sb3#
    • 1...Sg4
      • 2.Sd7#
    • 1...Sf5
      • 2.Sd7#
    • 1...Sb5
      • 2.Qxb5#
    • 1...Sxc8
      • 2.Qb5#
    • 1...g5
      • 2.Qe7#
    • 1...f5+
      • 2.Sd7#
    • 1...f6+
      • 2.Qe7#
  • Tries
    • 1.Bb5?
      • threat
        • 2.Sb3#
      • 1...f5+
        • 2.Sd7#
      • 1...f6+
        • 2.Qe7#
      • 1...Sxb5
        • 2.Qxb5#
      • 1...dxc4!
    • 1.Rxc7+?
      • 1...Sc6
        • 2.Rxc6#
        • 2.Qxc6#
      • 1...Rxc7!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qd6#
      • 1...Bxd7
        • 2.Sxd7#
      • 1...Sxc4
        • 2.Sb3#
      • 1...Sxc8
        • 2.Qb5#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sf5
        • 2.Qxd5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...f5
        • 2.Se6#
      • 1...f6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(b);N_GUARD::S(I)
    • B(b);N_GUARD::S(I),XB(b)
    • B(c);N_GUARD::QAB(H)
    • B(c);N_GUARD::QAB(H),XB(c)
    • S(a);SBLOCK,XP(D)::S(A)
    • S(a);S_CUTB(b)::S(I)
    • S(h);N_GUARD::QAR1(H),XS(h)
    • S(h);N_GUARD,N_SPINR(j),XR(G)::QAR1(H)
    • P(g);S_CUTB(c)::QAB(H)
    • P(k);CHECK,S_CUTB(b)::S(I)
    • P(k);CHECK,S_CUTB(c)::QAB(H)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(A)
      • Vars
        • P(k);CHECK,S_CUTB(b)::S(I)
        • P(k);CHECK,S_CUTB(c)::QAB(H)
        • S(h);OGATE,XB(C)::QAR1(H),XS(h)
      • Refutation
        • P(e);XP(D)
    • Try
      • R(G);CHECK,XR(j)
      • Refutation
        • R(i);XR(G)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • B(b);XQ(H)::S(I),XB(b)
      • S(a);SBLOCK,XP(D)::S(A)
      • S(h);N_GUARD,N_SPINR(j),XR(G)::QAR1(H)
      • B(c);N_GUARD::QAB(H),XB(c)
      • S(a);N_GUARD::QAR1(H),XP(e)
      • S(h);N_GUARD::QAR1(H),XS(h)
      • P(k);N_GUARD,P_PINQ(H),S_CUTB(b)::S(I)
      • P(k);P_PINQ(H),S_CUTB(c)::QAB(H)
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