MESON Chess Problem Database

Problem Display
PID: 248883 (K5B1/Q4N2/3N4/2pp3R/1P1k1Pb1/pq1p3R/2rP4/8 w - - 0 1)

Blikeng, Bjarne

Thema Danicum, 1987

K5B1/Q4N2/3N4/2pp3R/1P1k1Pb1/pq1p3R/2rP4/8

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qxc5#
    • 1...Rb2
      • 2.Qxc5#
    • 1...Rxd2
      • 2.Qxc5#
  • Tries
    • 1.Sb5+?
      • 1...Kc4
        • 2.Qxc5#
      • 1...Ke4!
    • 1.Sg5?
      • threat
        • 2.Qg7#
      • 1...Bd7
        • 2.Sf3#
      • 1...Qa4!
    • 1.Sh6?
      • threat
        • 2.Qg7#
      • 1...Qa4
        • 2.Rxd5#
      • 1...Bd7!
    • 1.Sd8?
      • threat
        • 2.Sc6#
        • 2.Qg7#
      • 1...Rxd2
        • 2.Qxc5#
        • 2.Qg7#
      • 1...Qa4
        • 2.Rxd5#
      • 1...Bd7!
    • 1.Sh8?
      • threat
        • 2.Qg7#
      • 1...Qa4
        • 2.Rxd5#
      • 1...Bd7!
    • 1.Qe7?
      • threat
        • 2.Qf6#
        • 2.Qe3#
        • 2.Qe5#
      • 1...Rxd2
        • 2.Qf6#
        • 2.Qe5#
      • 1...cxb4
        • 2.Qe3#
      • 1...Be6
        • 2.Qf6#
      • 1...Qa4+!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc6#
      • 1...Rxd2
        • 2.Qxc5#
      • 1...Qa4
        • 2.Rxd3#
      • 1...Bd7
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::QAB1(G),XP(g)
    • R(a);N_GUARD,XP(A)::QAB1(G),XP(g)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);N_SPINP(g),P-FLIGHT::QAR1(G),XP(g)
      • Refutation
        • K(e);N_SPINP(g),P-FLIGHT
    • Try
      • S(H);
      • Threat
        • QAB(G)
      • Vars
        • B(f);N_GUARD::S(H)
      • Refutation
        • Q(c);P_PINQ(G)
    • Try
      • S(H);
      • Threat
        • QAB(G)
      • Vars
        • Q(c);N_GUARD,P_PINQ(G)::R1(E),XP(h)
      • Refutation
        • B(f);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_GUARD,P_PINQ(G)::R1(E),XP(h)
      • Refutation
        • B(f);
    • Try
      • S(H);
      • Threat
        • QAB(G)
      • Vars
        • Q(c);N_GUARD,P_PINQ(G)::R1(E),XP(h)
      • Refutation
        • B(f);
    • Try
      • Q(G);N_PINP(g)
      • Threat
        • DUALS(3)
      • Vars
        • P(g);XP(C)::QAB1(G)
        • B(f);::QAB(G)
      • Refutation
        • Q(c);CHECK
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • R(a);N_GUARD,XP(A)::QAB1(G),XP(g)
      • Q(c);N_GUARD,P_PINQ(G)::R1(B),XP(d)
      • B(f);N_GUARD::S(H)
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