MESON Chess Problem Database

Problem Display
PID: 99755 (8/8/B4p2/5Q2/1rrk1K2/8/2RP4/3R4 w - - 0 1)

Bartolovic, Hrvoje

Magyar Sakkszovetseg, 1977

8/8/B4p2/5Q2/1rrk1K2/8/2RP4/3R4

#2

6 + 4

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Rxc4#
    • 1...Rb2
      • 2.Rxc4#
    • 1...Rb3
      • 2.Rxc4#
    • 1...Rb6
      • 2.Rxc4#
    • 1...Rb7
      • 2.Rxc4#
    • 1...Rb8
      • 2.Rxc4#
    • 1...Rc3
      • 2.dxc3#
    • 1...Rc5
      • 2.Qd3#
      • 2.Qe4#
      • 2.Qxc5#
    • 1...Rc6
      • 2.Qd3#
      • 2.Qe4#
    • 1...Rc7
      • 2.Qd3#
      • 2.Qe4#
    • 1...Rc8
      • 2.Qd3#
      • 2.Qe4#
      • 2.Qd7#
  • Tries
    • 1.Rc3?
      • threat
        • 2.Rd3#
      • 1...Rb3
        • 2.Rxc4#
      • 1...Rxc3!
    • 1.Qe5+?
      • 1...Kd3+
        • 2.Qe4#
      • 1...fxe5+!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qd6#
      • 1...Kd3+
        • 2.Qe4#
      • 1...Kc5+
        • 2.d4#
      • 1...Rb5
        • 2.Qxc4#
      • 1...Rb6
        • 2.Qxc4#
      • 1...Rc5
        • 2.Qe4#
      • 1...Rc6
        • 2.Qe4#

Anticipated by 74995(1965)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R1(B),XR(b)
    • R(b);OGATE::R(A)+P(C)DCHECK,XR(b)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • R(a);N_GUARD::R1(B),XR(b)
      • Refutation
        • R(b);XR(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);CHECK,P-FLIGHT,P_SPINR(b)::QAB1(E)
      • Refutation
        • P(d);CHECK,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(c);CHECK,P-FLIGHT,P_SPINR(b)::QAB1(E)
      • K(c);CHECK,OGATE,P_SPINR(b),S_FLIGHT::P(C)
      • R(a);N_GUARD::QAR1(E),XR(b)
      • R(b);::QAR1(E)
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