MESON Chess Problem Database

Problem Display
PID: 249320 (n7/1p1P2B1/1P1R4/p3P3/NkPp2pq/N4p1n/1KB4p/7Q w - - 0 1)

Moiseev, Vadim Petrovich

Turoverov, Valentin Alekseevich

Schakend Nederland, 1977

n7/1p1P2B1/1P1R4/p3P3/NkPp2pq/N4p1n/1KB4p/7Q

#2

11 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxe1#
    • 1...Qf6
      • 2.Qe1#
    • 1...Qe7
      • 2.Qe1#
    • 1...Qd8
      • 2.Qe1#
    • 1...Qh5
      • 2.Qe1#
    • 1...Qh7
      • 2.Qe1#
    • 1...Qh8
      • 2.Qe1#
    • 1...Sf2
      • 2.Qe1#
    • 1...Sxb6
      • 2.Rxb6#
    • 1...g3
      • 2.Qe1#
  • Tries
    • 1.Ka2?
      • threat
        • 2.Qb1#
      • 1...Qe1
        • 2.Qxe1#
      • 1...Sg1!
    • 1.Rxd4?
      • threat
        • 2.c5#
      • 1...Qf2
        • 2.Bf8#
      • 1...g3
        • 2.Qe1#
      • 1...Sxb6!
    • 1.Rf6?
      • threat
        • 2.Bf8#
      • 1...Qxf6
        • 2.Qe1#
      • 1...Qh7
        • 2.Qe1#
      • 1...Qh8
        • 2.Qe1#
      • 1...Qh6!
    • 1.c5?
      • threat
        • 2.Rxd4#
      • 1...Sxb6
        • 2.Rxb6#
      • 1...d3
        • 2.Rd4#
      • 1...g3
        • 2.Qe1#
      • 1...Qf2!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Rf6#
      • 1...Qf6
        • 2.Rxf6#
        • 2.Qe1#
      • 1...Qe7
        • 2.Qe1#
      • 1...Qd8
        • 2.Qe1#
      • 1...Qh6
        • 2.Rxh6#
      • 1...Qh7
        • 2.Qe1#
      • 1...Qh8
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(g);N_GUARD::QAB(A),XQ(g)
    • Q(g);N_GUARD::QAB(A)
    • S(c);S_CUTQ(g)::QAB(A)
    • S(j);OGATE,XP(H)::R(I),XS(j)
    • P(f);S_CUTQ(g)::QAB(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • Q(g);N_GUARD::QAB(A),XQ(g)
      • Refutation
        • S(c);
    • Try
      • R(I);XP(e)
      • Threat
        • R(I)+P(F)
      • Vars
        • Q(g);N_GUARD,P_PINB(C)::B(K)
        • P(f);S_CUTQ(g)::QAB(A)
      • Refutation
        • S(j);XP(H)
    • Try
      • R(I);
      • Threat
        • B(K)
      • Vars
        • Q(g);N_GUARD,XR(I)::QAB(A)
        • Q(g);N_GUARD::QAB(A)
      • Refutation
        • Q(g);
    • Try
      • P(F);
      • Threat
        • R(I),XP(e)
      • Vars
        • S(j);OGATE,XP(H)::R(I),XS(j)
        • P(e);::R(I)
        • P(f);S_CUTQ(g)::QAB(A)
      • Refutation
        • Q(g);P_PINB(C)
  • Actual
    • B(K);
    • Threat
      • B(K)+R(I)
    • Vars
      • Q(g);N_GUARD::QAB(A)
      • Q(g);N_GUARD::B(K)+R(I),XQ(g)
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