MESON Chess Problem Database

Problem Display
PID: 269342 (8/8/pB6/5K2/1pk1p3/2pRP3/2Q3BR/8 w - - 0 1)

Koshel, Mikhail Igorevich

Mosiashvili-75 JT (Kudesnik), 2023

8/8/pB6/5K2/1pk1p3/2pRP3/2Q3BR/8

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Bf1?
      • threat
        • 2.Rd1#
        • 2.Rdd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Kb5
        • 2.Rd6#
      • 1...b3
        • 2.Rd4#
      • 1...exd3!
    • 1.Rd5?
      • threat
        • 2.Rc5#
      • 1...b3
        • 2.Qxe4#
      • 1...Kxd5!
    • 1.Rd6?
      • threat
        • 2.Bf1#
      • 1...Kb5
        • 2.Bf1#
      • 1...b3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Rd4#
      • 1...Kxd3
        • 2.Bf1#
      • 1...exd3
        • 2.Rh4#
      • 1...c2
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(6)
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::B(B)+R(D)
        • P(b);::B(B)+R(D),DCHECK
      • Refutation
        • P(d);XR(D)
    • Try
      • R(D);
      • Threat
        • R1(D)
      • Vars
        • P(b);SBLOCK::QAR2(A),XP(d)
      • Refutation
        • K(c);N_SPINP(a),P_SPINP(d),S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Threat
        • B(B)
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::B(B)
      • Refutation
        • P(b);
  • Actual
    • Q(A);N_PINP(a),P_PINP(b)
    • Threat
      • R1(D)
    • Vars
      • K(c);N_SPINP(b),OGATEB,S_FLIGHT,XR(D)::B(B)
      • P(d);OGATEB,SBLOCK,XR(D)::R(C)
      • P(a);::QAB(A),XP(e)
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