MESON Chess Problem Database

Problem Display
PID: 162331 (Kb5Q/4p2p/3pB3/1p2P2p/1Rn1k1nR/4B1P1/2N1P3/7b w - - 0 1)

Ahues, Herbert Siegfried Oskar

Sakkelet, 1992

Kb5Q/4p2p/3pB3/1p2P2p/1Rn1k1nR/4B1P1/2N1P3/7b

#2

10 + 10

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5
      • 2.Qxh7#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Qxh7#
      • 1...Sxe5
        • 2.Bxe5#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sh6
        • 2.Bxh6#
      • 1...h6
        • 2.Qh7#
      • 1...Sf6!
    • 1.Qf6?
      • threat
        • 2.Qf4#
        • 2.Qf5#
      • 1...dxe5
        • 2.Qf5#
      • 1...exf6!
    • 1.Qf8?
      • threat
        • 2.Qf4#
        • 2.Qf5#
      • 1...dxe5
        • 2.Qf5#
      • 1...Kxe5+!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxh7#
      • 1...Sb6+
        • 2.Bxb6#
      • 1...Sxe5
        • 2.Bxe5#
      • 1...Se3
        • 2.Bxe3#
      • 1...h6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(g);SBLOCK,XP(G)::QAB(J),XP(i)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB(J),XP(i)
      • Vars
        • S(d);OGATE,XP(G)::R(F)+B(C),XS(d)
        • S(d);OGATEB::R(F)+B(C),XS(d)
        • P(i);::QAB(J)
      • Refutation
        • S(d);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);XP(G)::QAB1(J)
      • Refutation
        • P(h);XQ(J)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);XP(G)::QAB1(J)
      • Refutation
        • K(c);CHECK,N_SPINS(b),P-FLIGHT,XP(G)
  • Actual
    • B(C);N_PINS(b),P_PINS(d)
    • Threat
      • QAB(J),XP(i)
    • Vars
      • S(b);CHECK,OGATEB::R(E)+B(C),XS(b)
      • S(b);OGATE,XP(G)::R(E)+B(C),XS(b)
      • S(b);OGATEB::R(E)+B(C),XS(b)
      • P(i);::QAB(J)
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