MESON Chess Problem Database

Problem Display
PID: 52986 (8/2p5/4Q1p1/6K1/Pp1k4/1Pb5/3P4/2RR3b w - - 0 1)

Volkmann, Albert

Schach-Express, 1950

8/2p5/4Q1p1/6K1/Pp1k4/1Pb5/3P4/2RR3b

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc4#
      • 2.Qe3#
      • 2.dxc3#
    • 1...Kc5
      • 2.d4#
    • 1...Bd5
      • 2.Qe3#
    • 1...Bxd2+
      • 2.Rxd2#
    • 1...c5
      • 2.dxc3#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Qc4#
      • 1...Bxd2+
        • 2.Rxd2#
      • 1...Kd3
        • 2.Qc4#
        • 2.Qe3#
        • 2.dxc3#
      • 1...Kc5
        • 2.d4#
      • 1...Bd5
        • 2.Qe3#
      • 1...g5+!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qe3#
        • 2.dxc3#
      • 1...Kxe5!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Qc4#
      • 1...Kd3+
        • 2.dxc3#
      • 1...Kc5+
        • 2.d4#
      • 1...Bxd2
        • 2.Rxd2#
      • 1...Bd5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATE,P_SPINB(b),S_FLIGHT::P(C)
    • B(a);SBLOCK::QAB1(G)
    • B(b);CHECK,OGATE,P_SPINB(b),XP(C)::R(B),XB(b)
    • P(f);SBLOCK::R(B)+P(C)DCHECK,XB(b)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAR1(G)
      • Vars
        • B(b);CHECK,OGATE,P_SPINB(b),XP(C)::R(B),XB(b)
        • K(d);OGATE,P_SPINB(b),S_FLIGHT::P(C)
        • B(a);SBLOCK::QAB1(G)
      • Refutation
        • P(e);CHECK
    • Try
      • Q(G);CHECK
      • Refutation
        • K(d);S_FLIGHT,XQ(G)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR1(G)
    • Vars
      • K(d);CHECK,P-FLIGHT::R(B)+P(C),XB(b)
      • K(d);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
      • B(b);OGATE,P_SPINB(b),XP(C)::R(B),XB(b)
      • B(a);SBLOCK::QAB1(G)
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