MESON Chess Problem Database

Problem Display
PID: 7030 (3N4/1BNK1pQr/3PR2p/k5qR/3P4/1PP5/3B4/1b6 w - - 0 1)

Adabashev, Mark Ivanovich

1st Prize, Norsk Sjakkblad, 1935

3N4/1BNK1pQr/3PR2p/k5qR/3P4/1PP5/3B4/1b6

#2

12 + 6

16265 The Two-move Chess Problem in the Soviet Union 1923-1943 1943
45 Schach 1951
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5+
      • 2.Rxb5#
  • Tries
    • 1.Kc6?
      • threat
        • 2.c4#
      • 1...Qb5+
        • 2.Rxb5#
      • 1...Qc5+
        • 2.Rxc5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bf5
        • 2.Re5#
        • 2.Qe5#
      • 1...f5
        • 2.Re5#
        • 2.Qe5#
      • 1...Be4+!
  • Keys
    • 1.Sa8!
      • threat
        • 2.c4#
      • 1...Qb5+
        • 2.Sc6#
      • 1...Kb5
        • 2.c4#
      • 1...Bf5
        • 2.Qe5#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE::R1(E),XQ(c)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • B(A)+P(C)
      • Vars
        • Q(c);CHECK,OGATE::R1(E),XQ(c)
        • Q(c);CHECK,OGATE::R(E),XQ(c)
      • Refutation
        • B(a);CHECK
  • Actual
    • S(I);
    • Threat
      • B(A)+P(C)
    • Vars
      • Q(c);CHECK::S(L)
      • K(b);P-FLIGHT::P(C)
      • B(a);N_SPINQ(c),P_PINR(G),S_CUTQ(c)::QAR(K)
      • P(e);N_SPINQ(c),P_PINQ(K),S_CUTQ(c)::R(G)
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