MESON Chess Problem Database

Problem Display
PID: 53109 (2R5/B3R3/2b2K2/r1N5/3k2B1/P7/Q7/1n6 w - - 0 1)

Pfeiffer, Mieczyslaw

Schach-Echo, 1933

2R5/B3R3/2b2K2/r1N5/3k2B1/P7/Q7/1n6

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sa6+?
      • 1...Kc3
        • 2.Re3#
      • 1...Kd3
        • 2.Re3#
      • 1...Rc5!
    • 1.Re4+?
      • 1...Kc3
        • 2.Rc4#
      • 1...Bxe4!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Be2#
        • 2.Qd3#
      • 1...Sxd2!
  • Keys
    • 1.Be2!
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Se4#
      • 1...Sxa3
        • 2.Qd2#
      • 1...Be4
        • 2.Se6#
      • 1...Ra4
        • 2.Sxa4#
      • 1...Bb5
        • 2.Sa6#
      • 1...Bd5
        • 2.Sb3#
      • 1...Sd2
        • 2.Qxd2#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P_SPINB(d),S_CUTR(c),S_FLIGHT::R(G)
        • K(b);P-FLIGHT,S_CUTR(c)::R1(G)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • R(G);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(G)
      • Refutation
        • B(d);XR(G)
    • Try
      • Q(A);CHECK
      • Refutation
        • S(a);XQ(A)
  • Actual
    • B(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);S_CUTR(c),S_CUTR(c),S_FLIGHT::S(D)
      • S(a);N_GUARD,XP(B)::QAR2(A)
      • B(d);SBLOCK::B(F)+S(D),DCHECK
      • R(c);N_GUARD::B(F)+S(D),XR(c)
      • B(d);S_CUTR(c)::B(F)+S(D)
      • S(a);N_GUARD::QAR2(A),XS(a)
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