MESON Chess Problem Database

Problem Display
PID: 262021 (R1N2Bkr/P1pPK2p/1P1PP3/1q1Q4/8/5P2/8/8 w - - 0 1)

Lipton, Michael

The Problemist, 1954

R1N2Bkr/P1pPK2p/1P1PP3/1q1Q4/8/5P2/8/8

#2

11 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qg5#
    • 1...Qe2
      • 2.Qg5#
    • 1...Qa4
      • 2.Qg5#
    • 1...Qc4
      • 2.Qg5#
    • 1...Qa6
      • 2.Qg5#
    • 1...Qc6
      • 2.Qg5#
    • 1...Qxd7+
      • 2.exd7#
    • 1...Qb3
      • 2.Qg5#
    • 1...Qb4
      • 2.Qg5#
    • 1...Qxb6
      • 2.Qg5#
    • 1...c5
      • 2.Qg5#
  • Keys
    • 1.Bh6!
      • 1...Qxd7+
        • 2.exd7#
      • 1...Qxd5
        • 2.d8Q#
        • 2.d8R#
      • 1...Qxb6
        • 2.Sxb6#
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...cxb6
        • 2.Sxb6#
      • 1...cxd6
        • 2.Sxd6#
      • 1...Qf1
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qe2
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qd3
        • 2.d8Q#
        • 2.d8R#
      • 1...Qa4
        • 2.Qg5#
      • 1...Qc4
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qa6
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qc6
        • 2.Qg5#
      • 1...Qb1
        • 2.d8Q#
        • 2.d8R#
      • 1...Qb2
        • 2.d8Q#
        • 2.d8R#
      • 1...Qb3
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qb4
        • 2.Qg5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qa5
        • 2.d8Q#
        • 2.d8R#
      • 1...Qc5
        • 2.d8Q#
        • 2.d8R#
      • 1...c5
        • 2.Qg5#
      • 1...c6
        • 2.d8Q#
        • 2.d8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::QAR(B)
    • Q(a);N_GUARD,P_PINP(E)::QAR(B)
    • Q(a);CHECK,OGATE,XP(G)::QAB(B)+P(E),XQ(a)
    • Q(a);N_GUARD,P_PINP(D)::QAR(B)
    • Q(a);N_GUARD,XP(C)::QAR(B)
    • P(b);S_CUTQ(a)::QAR(B)
  • Actual
    • B(K);
    • Vars
      • Q(a);CHECK,OGATE,XP(G)::QAB(B)+P(E),XQ(a)
      • Q(a);N_GUARD,XQ(B)::P=Q
      • P(b);XP(C)::R(I)+S(J),XP(b)
      • P(b);XP(D)::R(I)+S(J),XP(b)
      • Q(a);N_GUARD::P=Q
      • Q(a);N_GUARD::QAR(B)
      • Q(a);N_GUARD,P_PINP(D)::P=Q
      • P(b);S_CUTQ(a)::QAR(B)
      • P(b);S_CUTQ(a)::P=Q
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