MESON Chess Problem Database

Problem Display
PID: 178132 (8/5R2/1K6/1P1pk3/1B2p3/Q1R5/8/7B w - - 0 1)

Abramenko, Igor Konstantinovich

Marandiuk, Mikhail Nazarovich

5th Prize, Schach-Echo, 1970

8/5R2/1K6/1P1pk3/1B2p3/Q1R5/8/7B

#2

7 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6+?
      • 1...Kd4
        • 2.Qb4#
        • 2.Qc5#
      • 1...Ke6!
    • 1.Bf8?
      • 1...Kd4
        • 2.Bg7#
      • 1...Ke6
        • 2.Qe7#
      • 1...d4
        • 2.Qd6#
      • 1...e3!
    • 1.Rcf3?
      • 1...Kd4
        • 2.Qc3#
      • 1...Ke6
        • 2.Re7#
      • 1...exf3
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Rc6?
      • 1...Kd4
        • 2.Qc3#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Rcc7?
      • 1...Kd4
        • 2.Qc3#
      • 1...Ke6
        • 2.Rce7#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
  • Keys
    • 1.Qa8!
      • 1...Kd4
        • 2.Qh8#
      • 1...Ke6
        • 2.Qe8#
      • 1...d4
        • 2.Qxe4#
      • 1...e3
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(c);S_FLIGHT::B(D)
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • R(C);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • K(c);P-FLIGHT::R1(G)
        • P(a);OGATEB,XR(C)::QAR2(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • K(c);P-FLIGHT::R1(C)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAB(B)
      • K(c);P-FLIGHT::QAR2(B)
      • P(b);OGATE::QAR1(B),XP(a)
      • P(a);::QAR1(B),XP(b)
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