MESON Chess Problem Database

Problem Display
PID: 6057 (n5b1/3Q2p1/Np1P2Bp/1P1kp2K/3pR3/8/2PN4/8 w - - 0 1)

Schiffmann, Israel Abraham

3rd HM., Revista de Sah, 1926

n5b1/3Q2p1/Np1P2Bp/1P1kp2K/3pR3/8/2PN4/8

#2

9 + 8

1397 Faszinierendes Schachproblem 1963
56 The Problemist 1981

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qc6#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Bh7
      • 2.Bf7#
    • 1...Sc7
      • 2.dxc7#
    • 1...d3
      • 2.c4#
  • Tries
    • 1.Kh4?
      • 1...Be6
        • 2.Qc6#
      • 1...Bf7
        • 2.Bxf7#
      • 1...Bh7
        • 2.Bf7#
      • 1...Sc7
        • 2.dxc7#
      • 1...d3
        • 2.c4#
      • 1...h5!
    • 1.Rf4?
      • threat
        • 2.Be4#
      • 1...e4
        • 2.Rf5#
      • 1...Bf7
        • 2.Bxf7#
      • 1...Bh7
        • 2.Bf7#
      • 1...d3
        • 2.c4#
      • 1...exf4!
    • 1.Rg4?
      • threat
        • 2.Be4#
      • 1...Bf7
        • 2.Bxf7#
      • 1...Bh7
        • 2.Bf7#
      • 1...d3
        • 2.c4#
      • 1...e4!
    • 1.Rh4?
      • threat
        • 2.Be4#
      • 1...Bf7
        • 2.Bxf7#
      • 1...Bh7
        • 2.Bf7#
      • 1...d3
        • 2.c4#
      • 1...e4!
    • 1.Qe8?
      • threat
        • 2.Qxe5#
      • 1...Be6
        • 2.Qc6#
      • 1...Kxd6!
    • 1.Qe7?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...d3
        • 2.Qxe5#
        • 2.c4#
      • 1...Be6!
    • 1.Qf7+?
      • 1...Kxd6
        • 2.Sc4#
      • 1...Bxf7!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qc6#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Be6
        • 2.Qc6#
      • 1...Bh7
        • 2.Qf7#
      • 1...Sc7
        • 2.Sxb6#
      • 1...d3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(h);SBLOCK::QAB1(I)
    • B(h);N_GUARD,P_PINB(H)::B(H),XB(h)
    • B(h);N_GUARD::B(H)
    • S(g);OGATE::QAR(I)+P(G),XS(g)
    • P(a);N_GUARD::P(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • B(h);SBLOCK::QAB1(I)
        • B(h);N_GUARD::B(H),XB(h)
        • B(h);N_GUARD::B(H)
        • S(g);OGATE::QAR(I)+P(G),XS(g)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(e);
    • Try
      • R(C);
      • Threat
        • B(H)
      • Vars
        • P(c);OGATEB::R(C)
        • B(h);N_GUARD,P_PINB(H)::B(H),XB(h)
        • B(h);N_GUARD::B(H)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);XR(C)
    • Try
      • R(C);
      • Threat
        • B(H)
      • Vars
        • B(h);N_GUARD,P_PINB(H)::B(H),XB(h)
        • B(h);N_GUARD::B(H)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Threat
        • B(H)
      • Vars
        • B(h);N_GUARD,P_PINB(H)::B(H),XB(h)
        • B(h);N_GUARD::B(H)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
    • Try
      • Q(I);
      • Threat
        • QAR1(I),XP(c)
      • Vars
        • B(h);SBLOCK::QAB1(I)
      • Refutation
        • K(b);P-FLIGHT,XP(G)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • B(h);
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(G)::S(B)
      • Refutation
        • B(h);P_PINB(H),XQ(I)
  • Actual
    • S(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XS(B)::QAR2(I)
      • B(h);N_GUARD,P_PINB(H)::QAB(I),XB(h)
      • B(h);SBLOCK::QAB1(I)
      • B(h);N_GUARD::QAB(I)
      • S(g);N_GUARD::S(B),XP(d)
      • P(a);N_GUARD::S(B)
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