MESON Chess Problem Database

Problem Display
PID: 168155 (2B5/1Rb5/k2P4/2p5/2P5/2Q5/8/4K3 w - - 0 1)

van der Ven, AMA

Tijdschrift vd NSB, 1934

2B5/1Rb5/k2P4/2p5/2P5/2Q5/8/4K3

#2

6 + 3

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Rc7#
      • 2.Rd7#
      • 2.Re7#
      • 2.Rf7#
      • 2.Rg7#
      • 2.Rh7#
    • 1...Bxd6
      • 2.Qa1#
      • 2.Qa3#
    • 1...Bb8
      • 2.Qa1#
      • 2.Qa3#
  • Tries
    • 1.Rb4+?
      • 1...Ka5
        • 2.Qa3#
      • 1...Ka7!
    • 1.Rb6+?
      • 1...Ka7
        • 2.Qa5#
      • 1...Kxb6!
    • 1.Ra7+?
      • 1...Kb6
        • 2.Ra6#
      • 1...Kxa7!
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Ra7#
        • 2.Qa1#
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qb5#
      • 1...Ba5+!
    • 1.Qb4?
      • threat
        • 2.Rxc7#
        • 2.Qb5#
      • 1...Bxd6
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Qa3#
        • 2.Qa4#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Ba5
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Bb6
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Qb5#
        • 2.Qxb6#
      • 1...Bb8
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Qa3#
        • 2.Qa4#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Bd8
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Qb5#
      • 1...cxb4!
    • 1.Qb3?
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Rb5#
        • 2.Ra7#
        • 2.Qa2#
        • 2.Qa3#
        • 2.Qb5#
      • 1...Ba5+!
  • Keys
    • 1.Qg7!
      • 1...Ba5+
        • 2.Rb4#
      • 1...Ka5
        • 2.Qa1#
      • 1...Bxd6
        • 2.Rb5#
        • 2.Qa1#
      • 1...Bb6
        • 2.Ra7#
      • 1...Bb8
        • 2.Rb5#
        • 2.Qa1#
      • 1...Bd8
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • B(c);CHECK
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • B(c);CHECK
  • Actual
    • Q(B);
    • Vars
      • B(c);CHECK,SBLOCK::B(F)+R(E)
      • K(b);P-FLIGHT::QAR(B)
      • B(c);SBLOCK::B(F)+R(E),DCHECK
      • B(c);::B(F)+R(E)
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