MESON Chess Problem Database

Problem Display
PID: 161301 (8/8/4p3/Q7/pp6/1k6/8/K1R5 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/8/4p3/Q7/pp6/1k6/8/K1R5

#2

3 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4?
      • threat
        • 2.Qxb4#
      • 1...Ka3
        • 2.Qxb4#
      • 1...Kxc4!
    • 1.Qd8?
      • threat
        • 2.Qd3#
      • 1...a3
        • 2.Qd1#
      • 1...Ka3!
    • 1.Qd5+?
      • 1...Ka3
        • 2.Qa2#
      • 1...exd5!
    • 1.Qe5?
      • threat
        • 2.Qb2#
        • 2.Qg3#
        • 2.Qe3#
      • 1...Ka3
        • 2.Qb2#
      • 1...a3!
    • 1.Qh5?
      • threat
        • 2.Qf3#
        • 2.Qh3#
      • 1...a3
        • 2.Qd1#
      • 1...Ka3!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe3#
      • 1...Ka3
        • 2.Rc3#
      • 1...a3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • P(b);SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(c)::R(B)
      • P(b);SBLOCK::QAB1(C)
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