MESON Chess Problem Database

Problem Display
PID: 226706 (8/Q1r5/p5n1/1p1pqp2/1BkP4/K3pN1r/2P1N2b/3B4 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2019

8/Q1r5/p5n1/1p1pqp2/1BkP4/K3pN1r/2P1N2b/3B4

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxd4#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rb7
      • 2.Qc5#
    • 1...Rd7
      • 2.Qc5#
    • 1...Re7
      • 2.Qc5#
    • 1...Rf7
      • 2.Qc5#
    • 1...Rg7
      • 2.Qc5#
    • 1...Rh7
      • 2.Qc5#
    • 1...Sf4
      • 2.Sxe5#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Be2#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Sxe5#
      • 1...e2
        • 2.Sd2#
      • 1...Qe4!
    • 1.Sf4?
      • threat
        • 2.Be2#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Sxf4
        • 2.Sxe5#
      • 1...Qe4
        • 2.Qxc7#
      • 1...e2!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Be2#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Qe4
        • 2.Qxc7#
      • 1...Sf4
        • 2.Sxe5#
      • 1...e2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(g);OGATE,XP(G)::QAR1(H),XQ(g)
    • R(k);N_GUARD::QAR1(H),XR(k)
    • R(k);N_GUARD::QAR1(H)
    • S(j);N_GUARD,S_CUTB(a)::S(E),XQ(g)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(A)
      • Vars
        • Q(g);OGATE,XP(G)::QAR1(H),XQ(g)
        • S(j);N_GUARD,S_CUTB(a)::S(E),XQ(g)
        • P(b);N_GUARD::S(E)
      • Refutation
        • Q(g);
    • Try
      • S(C);
      • Threat
        • B(A)
      • Vars
        • Q(g);OGATE,XP(G)::QAR1(H),XQ(g)
        • S(j);N_GUARD,XS(C)::S(E),XQ(g)
        • Q(g);N_GUARD::QAR(H),XR(k)
      • Refutation
        • P(b);P_PINS(E)
  • Actual
    • S(C);
    • Threat
      • B(A)
    • Vars
      • Q(g);OGATE,XP(G)::QAR1(H),XQ(g)
      • Q(g);N_GUARD::QAR(H),XR(k)
      • S(j);N_GUARD::S(E),XQ(g)
      • P(b);N_GUARD::S(E)
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