MESON Chess Problem Database

Problem Display
PID: 132863 (8/8/K7/8/Bkp5/8/2P5/2B2Q2 w - - 0 1)

Amirov, Talip Khasanovich

Politika, 1972

8/8/K7/8/Bkp5/8/2P5/2B2Q2

#2

5 + 2

5454 Near Snap 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa4
      • 2.Qxc4#
    • 1...c3
      • 2.Qb5#
  • Tries
    • 1.Kb6?
      • 1...Kxa4
        • 2.Qxc4#
      • 1...c3
        • 2.Qb5#
        • 2.Qf4#
      • 1...Kc3!
    • 1.Bb2?
      • 1...Kxa4
        • 2.Qxc4#
      • 1...c3
        • 2.Qb5#
      • 1...Kc5!
    • 1.Bb5?
      • threat
        • 2.Qxc4#
      • 1...Kc3
        • 2.Qxc4#
      • 1...c3
        • 2.Qc4#
        • 2.Qf8#
      • 1...Kc5!
    • 1.Qe2?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxa4
        • 2.Qxc4#
      • 1...c3
        • 2.Qb5#
      • 1...Kc5!
    • 1.Qd3?
      • threat
        • 2.Qa3#
      • 1...Kxa4
        • 2.Qxc4#
        • 2.Qa3#
      • 1...Kc5
        • 2.Ba3#
      • 1...c3
        • 2.Qb5#
        • 2.Qd4#
      • 1...cxd3!
    • 1.Qf2?
      • 1...Kc3
        • 2.Qd2#
      • 1...c3
        • 2.Qd4#
      • 1...Kxa4!
    • 1.Qf4?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxa4
        • 2.Qxc4#
      • 1...Kc5!
    • 1.Qf5?
      • threat
        • 2.Qa5#
      • 1...Kxa4
        • 2.Qa5#
        • 2.Qb5#
      • 1...c3
        • 2.Qb5#
      • 1...Kc3!
    • 1.Qf8+?
      • 1...Kxa4
        • 2.Qa3#
      • 1...Kc3!
  • Keys
    • 1.Qd1!
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxa4
        • 2.c3#
      • 1...Kc5
        • 2.Ba3#
      • 1...c3
        • 2.Qd4#

Anticipated by 156393(1948)

This anticipates 46037(2002)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XB(D)::QAR2(B),XP(b)
    • P(b);OGATE,SBLOCK::QAR1(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR2(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR2(B),XP(b)
        • P(b);OGATE::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR1(B),XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT,XB(D)::QAR2(B),XP(b)
        • P(b);OGATE,SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT,XB(D)::QAR2(B),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT,XB(D)::QAB(B)+P(C)
      • K(a);S_FLIGHT::B(A)
      • P(b);OGATEB::QAR2(B)
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