MESON Chess Problem Database

Problem Display
PID: 148258 (8/3p4/3R1Qbr/p7/7p/1P6/1n3K2/kB1R4 w - - 0 1)

Semerad, Bohumil

Narodni Politika, 1911

(First published on Sat Sep 2 1911)

8/3p4/3R1Qbr/p7/7p/1P6/1n3K2/kB1R4

#2

6 + 7

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Tries
    • 1.R1d2?
      • threat
        • 2.Qxb2#
      • 1...Kxb1
        • 2.Qxb2#
      • 1...Bc2!
    • 1.Ra6?
      • threat
        • 2.Rxa5#
      • 1...a4
        • 2.Rxa4#
      • 1...Rh5!
  • Keys
    • 1.R6d4!
      • threat
        • 2.Ra4#
      • 1...Sxd1+
        • 2.Rxd1#
      • 1...Sd3+
        • 2.R4xd3#
      • 1...Sa4
        • 2.Rxa4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...a4
        • 2.Rxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(F),XS(b)
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT,XB(A)::QAR1(F),XS(b)
      • Refutation
        • B(e);
    • Try
      • R(E);P_PINP(d)
      • Threat
        • R(E),XP(d)
      • Vars
        • P(d);OGATE::R(E),XP(d)
      • Refutation
        • R(f);
  • Actual
    • R(E);N_PINS(b)
    • Threat
      • R(E)
    • Vars
      • S(b);CHECK,OGATE,XR(B)::QAB(F)+R(E),XS(b)
      • S(b);CHECK,OGATEB::QAB(F)+R(E),XS(b)
      • S(b);::QAB(F)+R(E),DCHECK,XS(b)
      • S(b);OGATEB::QAB(F)+R(E),XS(b)
      • P(d);::R(E),XP(d)
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