MESON Chess Problem Database

Problem Display
PID: 242618 (BB6/8/1pn5/bbpk1P2/1r3RpK/1p4Q1/2P3P1/8 w - - 0 1)

Casa, Alex

Source?, 0000

BB6/8/1pn5/bbpk1P2/1r3RpK/1p4Q1/2P3P1/8

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qe5#
        • 2.Qe6#
      • 1...Rd4
        • 2.Qe6#
      • 1...Re4
        • 2.Qxe4#
      • 1...c4
        • 2.Qd4#
        • 2.Qe5#
      • 1...Rxf4!
    • 1.Qf3+?
      • 1...Re4
        • 2.Qxe4#
      • 1...gxf3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qd3#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Bxc4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(C)
        • R(b);N_GUARD::QAB1(C),XR(b)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • P(c);P_PINR(D),XQ(C)
  • Actual
    • R(D);
    • Threat
      • QAR2(C)
    • Vars
      • K(g);N_SPINS(i),S_FLIGHT,XR(D)::QAB1(C)
      • R(b);SBLOCK,XR(D)::QAR1(C)
      • B(e);SBLOCK,XR(D)::QAR1(C)
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