MESON Chess Problem Database

Problem Display
PID: 249705 (8/8/8/5Q2/8/2p2Kp1/7b/r4k2 w - - 0 1)

Lommer, Harold M

Schweizerische Schachzeitung, 1932

8/8/8/5Q2/8/2p2Kp1/7b/r4k2

#2

2 + 5

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qxb1#
    • 1...Ra2
      • 2.Qb1#
    • 1...Ra3
      • 2.Qb1#
    • 1...Ra4
      • 2.Qb1#
    • 1...Ra5
      • 2.Qb1#
    • 1...Ra6
      • 2.Qb1#
    • 1...Ra7
      • 2.Qb1#
    • 1...Ra8
      • 2.Qb1#
  • Tries
    • 1.Qd3+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kg1!
    • 1.Qb5+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kg1!
  • Keys
    • 1.Qc2!
      • 1...Ke1
        • 2.Qe2#
      • 1...Kg1
        • 2.Qg2#
      • 1...Rb1
        • 2.Qxb1#
      • 1...Rc1
        • 2.Qxc1#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Qg2#
      • 1...Ra2
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra3
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra4
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra5
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra6
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra7
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra8
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Bg1
        • 2.Qe2#
      • 1...g2
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::QAR(B),XR(a)
    • R(a);N_GUARD::QAR(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • R(a);N_GUARD::QAR(B),XR(a)
      • R(a);N_GUARD::QAR2(B),XR(a)
      • R(a);SBLOCK::QAB1(B)
      • B(c);SBLOCK::QAB1(B)
      • P(e);N_GUARD::QAR1(B)
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