MESON Chess Problem Database

Problem Display
PID: 251622 (8/B1pn2N1/1nBp3b/K4Q1r/p6p/2P1k1P1/2RRpp2/1N1q4 w - - 0 1)

Seider, Shlomo

Jerusalem Post, 1968

8/B1pn2N1/1nBp3b/K4Q1r/p6p/2P1k1P1/2RRpp2/1N1q4

#2

10 + 12

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb1
      • 2.Rxe2#
      • 2.Rd3#
    • 1...Qc1
      • 2.Rxe2#
      • 2.Rd3#
    • 1...Qe1
      • 2.Rd3#
    • 1...Qf1
      • 2.Rd3#
    • 1...Qg1
      • 2.Rxe2#
      • 2.Rd3#
    • 1...Qh1
      • 2.Rxe2#
      • 2.Rd3#
    • 1...Rxf5+
      • 2.Sxf5#
    • 1...Bg5
      • 2.Qd3#
      • 2.Qe4#
      • 2.Qf3#
    • 1...Sc5
      • 2.Qf3#
    • 1...Se5
      • 2.Qe4#
    • 1...d5
      • 2.Qd3#
  • Tries
    • 1.Qg5+?
      • 1...Bxg5
        • 2.Sf5#
      • 1...Rxg5+!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sc4#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Sc5
        • 2.Qf3#
      • 1...Se5
        • 2.Qe4#
      • 1...d5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::R1(C)
    • R(g);CHECK,XQ(G)::S(J),XR(g)
    • S(l);N_PINQ(G),N_SPINS(h)::QAR1(G)
    • S(l);N_PINQ(G)::QAR1(G)
    • P(i);N_PINQ(G)::QAR1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(j);XQ(G)::S(J)
      • Refutation
        • R(g);CHECK,XQ(G)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(g);CHECK,XQ(G)::S(J),XR(g)
      • S(l);N_PINQ(G),N_SPINS(h)::QAR1(G)
      • S(l);N_PINQ(G)::QAR1(G)
      • P(i);N_PINQ(G)::QAR1(G)
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